Moment Of Inertia Of Flywheel Experiment Viva Questions

Moment of Inertia, Version 1. My attempt: 1. Experiment (. Moment of Inertia The Moment of Inertia is an objects resistance to angular acceleration. Theory: Theoretically, the rotational inertia, I, of a point mass is given by I = MR2, where M is the mass, R is the distance the mass is from the axis of rotation. To eliminate bearing friction from the computation, a second block of mass 24 kg is used and is observed to fall 3 m in 3. pdf - To determine the moment of inertia of the metallic disc and the rigidity modulus of the material of the wire. Measurement of Inductance by phasor diagram method. Determine the moment of inertia of the flywheel about its axis of rotation. The Moment Of Inertia Of The Flywheel Is 0. However, putting a flywheel on a motorcycle is problematic --beginning with the fact that a flywheel is a wide object while a motorcycle is a narrow object. —The Fly-wheel. The axis may be internal or external and may or may not be fixed. -Experiment 8. 159 rev/s (rps) Moment of Inertia. Enrichment Activity 5-11 11-14. Why in the experiment of finding the MOI of flywheel about its own axis the string used should be of very small diameter compared with the diameter of the axle? Why is the string of appreciable thickness half of its thickness should be added to the radius of the axle to get the effective value of r?. VIVA QUESTIONS AND ANSWERS. 05 kg and R= 4cm. What is a Flywheel. Question: Problem 3 A Flywheel Has A Radius Of 0. The flywheel is accelerated by the couple applied by the mass m. The mass moment of inertia of the part (or a link) can be found from period of oscillation of the compound pendulum formed by pivoting the link and setting it into oscillations as explained earlier. The axle is mounted on ball bearings on two fixed supports. Experiments on Gyroscope (Demonstration only) VIVA VOCE QUESTIONS 63-69 REFERENCES 70. is mounted on a shaft 3in. In a sonometer experiment, the string of length 'L' under tension vibrates in second overtone between two bridges. Lab M4: The Torsional Pendulum and Moment of Inertia Introduction A torsional pendulum, or torsional oscillator, consists of a disk-like mass suspended from a thin rod or wire. The string is pulled for 0. The moment of inertia of a point mass is. (a) The flywheel is driven from rest up to its working angular speed by a motor which produces an output power of 15kW for 3. 0 m/s, assuming 90. A string is wrapped around the rim of a flywheel 0. Divide the square into thin strips and estimate how much moment of inertia each strip will contribute. Understand the stress distribution within beams subject to bending or torsion. It is also popular as angular mass or rotational inertia of the given rigid body. 0002 kg-m 2 to 0. What Is The Magnitude Of The Retarding Torque On The Flywheel?. To eliminate bearing friction from the computation, a second block of mass 24 kg is used and is observed to fall 3 m in 3. It is used to determine the moment of inertia. The mass is allowed to fall through a height h at which point the string leaves the axle. If the body has a simple geometrical figure, e. 75 kg each and extend straight out from the. Physics 1050 Experiment 6 Introduction In this experiment, you will determine the moment of inertia for a metal disk by studying how its angular acceleration changes with the magnitude of the torque applied to it by a hanging mass. Apparatus used: Flywheel, a few masses, a strong and thin string, stop watch, vernier callipers. The Moment Of Inertia Of The Flywheel Is 0. To determine the Acceleration due to Gravity and Velocity for a freely falling body, using Digital Timing Techniques. the question is then why does this make it inaccurate? the answer is because the speed of the string uncoiling from the axel is constant in the first example. The book explains theory and methodology of performing experiments about: " Mechanics " Strength of Materials " Materials Science The book also includes: " IC Engines " Steam Engines " Boilers " Steam Turbines " Water Turbines and Pumps Manufacturing. (5), the moment of inertia depends on the axis of rotation. OR g) Determine the diameter of the given narrow wire using optical bench. They all enjoyed this section. In the case of flywheel, the whole thing rotates. Rockwell Hardness Test 7. Moment of inertia may also be called mass moment of inertia, rotational inertia, polar moment of inertia, or angular mass. (aCalculate the moment of inertia of the flywheel. Name of the Experiment 1 1 Static and Dynamic Balancing of a Shaft 1 2 Bifilar Suspension 2 3 Free Vibration of a Single Degree of Freedom System 2 4 Determining Mass Moment of Inertia of a Flywheel 3 5 Study of Compound Pendulum 3 6 Study of Gyroscope. Suppose the flywheels are called 'A' and 'B': from conservation of momentum for flywheel A you have: mrv_1 = I v_2/r + mrv_2 and for B:-mrv_1 = -I v_2/r - mrv_2 where 'm' is the mass of the canon ball, v_1 is the initial velocity of the canon ball, I is the moment of inertia for the flywheel, and r is the radius of the flywheel. Repeat the steps 2 through 8 for this new moment of inertia. The top has a moment of inertia of 1/4 MR^2 where M= 0. The review begins with an explanation of. If the final rotational kinetic energy of the spinning top is 0. According to Wikipedia, A flywheel is a spinning mechanized machine utilized to stock and release rotational power. Specifically, it is the second moment of mass with respect to the orthogonal distance from an axis (or pole). 5 kg, has a 0. The Moment Of Inertia Of The Flywheel Is 0. The moment of inertia about an axis perpendicular to the movement of the rigid system and through the center of mass is known as the polar moment of inertia. 00 cm from the pivot. When inertia is overcome, the weight of the flywheel keeps the motor running. The string is pulled for 0. 00-kg metal ring of radius 0. What is the retarding torque on the flywheel?. 4 K g / m 2 and radius 0. But -- I have an interesting thought for you - Being you want to experiment. 1, December 23, 1997 Page 1 EXPERIMENT: MOMENT OF INERTIA OBJECTIVES : 1) To familiarize yourself with the concept of the moment of inertia, I, which plays the same role in the description of the rotation of the rigid body as the mass plays in the description of its steady motion. The flywheel consists of a heavy circular disc or wheel with a strong axle mounted on ball bearings on two fixed supports. The pdf file allows students to independently learn and practise the AQA A level Physics Engineering Moments of Inertia topic. We've looked at the rotational equivalents of displacement, velocity, and acceleration; now we'll extend the parallel between straight-line motion and rotational motion by investigating the rotational equivalent of force, which is torque. Find an answer to your question While spinning down from 500. Define moment of inertia. The density of steel is 7500 kg/m3. Non-Inertial Systems: Non-inertial frames and fictitious forces. In the case of flywheel, the whole thing rotates. The mass moment of inertia of the part (or a link) can be found from period of oscillation of the compound pendulum formed by pivoting the link and setting it into oscillations as explained earlier. There is a small peg on the axle. Calculation of moment of inertia for rectangular, cylindrical and spherical bodies. Warm and Warm wheel 19. 8'4'2 D) 6'2'6 6. But there is an additional twist. Strength of materials, also called mechanics of materials, is a subject which deals with the behavior of solid objects subject to stresses and strains. doc: Download. small radial axle: R r:. Then its rotational kinetic energy, E = ½ Iω 2. of a flywheel. Let the moment of inertia about the axis through the centre of the square plate perpendicular to the plane, assumed to be along Z axis, be I. 4) The figure shows scale drawings of four objects, each of the same mass and uniform thickness, with the mass distributed uniformly. The radius of the axie of the flywheel can be measured with a caliper. A large number of viva and objective type questions are also given. When inertia is overcome, the weight of the flywheel keeps the motor running. Define Moment of Inertia, Polar Moment of Inertia, Mass Moment of Inertia. The energy in the flywheel is proportional to the square of the rotating speed, so the faster the engine runs, the smaller the torque pulses becomes (at least in angular displacement and angular velocity), because more energy is stored in the flywheel compared to the energy in the pulses themselves (the torque pulses are more or less constant at WOT, at least up to some RPM). Name of the Experiment 1 1 Static and Dynamic Balancing of a Shaft 1 2 Bifilar Suspension 2 3 Free Vibration of a Single Degree of Freedom System 2 4 Determining Mass Moment of Inertia of a Flywheel 3 5 Study of Compound Pendulum 3 6 Study of Gyroscope. Consequently, the radius of gyration is given by The physical interpretation of the radius of gyration is that it is the radius of a uniform thin hoop (or ring), having the same moment of inertia (about an axis passing through its geometric center - shown below), as the given body about the specified axis. 159 rev/s (rps) Moment of Inertia. 50 Experiment 9: Moments of Inertia Advance Reading Text: Torque, Rotational Motion, Moment of Inertia. The impacts resulting in crown formation are referred to as splashing. The flywheel of an engine consists essentially of a thin cast-iron ring of mean diameter 2 m. The depth of discharging of the flywheel and the moment of inertia of the flywheel rotor are constant. International Space Station Attitude Control and Energy Storage Experiment: Effects of Flywheel Torque Carlos M. In the experiment, a flywheel was mounted on a bench and a piece of string was wrapped round the axle, then over a pulley and masses were hung from the other end of the string. Units for linear momentum are kg ⋅ m/s while units for angular momentum are kg ⋅ m 2 /s. A gyroscope consists of a flywheel of mass m, which has a moment of inertia I for rotation about its axis. 109 TOP Measurement and Instrumentation - Electrical Engineering Multiple choice Questions and Answers Latest Measurement and Instrumentation Questions and Answers List 1. Calculate the moment of inertia of the flywheel and find the change in speed of the flywheel if a constant torque of 110 Nm acts on it for 5 seconds. With the above inertia value, it is easy to use DYNO-MAX's Inertia Calculator to figure a good diameter, length, and material combination to deliver that inertia. 50 Experiment 9: Moments of Inertia Advance Reading Text: Torque, Rotational Motion, Moment of Inertia. Join us on Facebook. In case of a rotating body a=v 2 /R, the equivalent of force F is the moment of force M = F R where R-the radius of a rotating body, and an equivalent of weight is the moment of inertia I = mR 2 /2,. the hanging mass weighed 1. The moment of inertia of any body having a shape that. viva voice questions for 1st sem basic viva questions related to various experiments. Find an answer to your question While spinning down from 500. Moment Of Inertia Lab Report Conclusion. For the expression in moment of. Time how long they spin. Question No. At least two questions will be set from each unit and the student will have to attempt at least one question from each unit. twist for the sample. The Moment Of Inertia Of The Flywheel Is 0. THE SIMPLE PENDULUM. Dynamics Dynamics comprises kinetics and kinematics. The moment of inertia of an object is a numerical value that can be calculated for any rigid body that is undergoing a physical rotation around a fixed axis. The basic relationship between moment of inertia and angular acceleration is that the larger the moment of inertia, the smaller is the angular acceleration. Increasing the ratio of motor inertia to load inertia is one of the most reliable ways to improve resonance problems. Video Prepared by : Experiment. Kinetics also takes into account the cause of the motion. Motorized gyroscope – Study of gyroscopic effect and couple. Vtu Engineering Physics Lab Viva Questions Vtu Engineering Physics Lab Viva If you ally craving such a referred Vtu Engineering Physics Lab Viva Questions ebook that will provide you worth, get the categorically best seller from us currently from several preferred authors. 05 kg and R= 4cm. Gear Train 22. Determining The Moment Of Inertia Of Flywheel. Determining the moment of inertia of a rod. Theory MomentofInertia(I) can be understood as the ro-tational analog of mass. The flywheel consists of a heavy circular disc or wheel with a strong axle mounted on ball bearings on two fixed supports. zip) · Conservation of Energy II (EX-5512). List of Experiments 1. Apparatus used: Flywheel, a few masses, a strong and thin string, stop watch, vernier callipers. for a body of moment of inertia I rotating at ω rad s –1 is given by E k = 1 2 I ω2. Since "=I!, rearranges to ! " I=. Accelerometer/LVDT experiment, 8. If the length of the outer cylinder is 10 cm, its inner and outer radii are 9. What is moment of inertia? Explain with reference to flywheel. Understanding the Relationship between Moment of Inertia (dependent variable) with Added Mass and Distance of Mass from Pulley (independent variables) on a Rotating Rod By: Rachel Scheidt Lab Partners; Cora Flath and Anthony DiNizo Experiment Conducted on June 9th, 2016 In this experiment a rotating rod mounted to a surface rotates due the force of a falling mass. Conceptualize a system to replace a clutch. Indicate which direction the gyroscopic couple will act. In this experiment, you can learn about then potantial energy, kinetic energy, moment of inertia and finally conservation of energy. You may use clamps to mount the Test Stand temporarily on the edge of a desk, but TecQuipment recommend a more permanent fixing to the desk or to a wall. Your gripping hand would have to exert a force of nearly 6000 lb on the ring to keep you from rotating about your hand. explain the method of drawing turning moment diagram for a prime mover, determine the fluctuation of energy in a cycle, determine the power of prime power, and determine mass moment of inertia of a flywheel and design it. Department of Physics Physics Lab Viva Voce Questions and its answers Laser Parameters 1. The aim of dynamics is to calculate the stress and strain on components or systems in order to be able to. A flywheel is a rotating mechanical device that is used to store rotational energy. edu/ 612-625-5000. Define young‟s modulus. What is the moment of inertia of the flywheel? 2. The product of the area and the square of the distance of the C. To determine the moment of inertia of a flywheel. Calculating the second moment of area of geometric figures can be confusing and time consuming by hand, so let this calculator do all the work for you. What are Equilibrium Equations 11. Experiment to find the shear centre of a C-section beam, 2. 1 Increase Motor Inertia/Load Inertia Ratio. Theory of Machines Objective Questions with Answers pdf - Set 21 Maximum fluctuation of energy in a flywheel is equal to [where I = Mass moment of inertia of the flywheel, E = Maximum fluctuation of energy,. One can define the moment of inertia as the ratio of the angular moment to the angular velocity of the particular object moving at its principal axis. the new moment of inertia, Inew, with these additional masses located at a distance R from the axis of rotation. (write your answer by Question 2-1 for reference during the lab) 4. Then we make some assumptions. Accelerometer/LVDT experiment, 8. (1) k x: equ. 55 ft-lb-sec^2. 5 Explain the moment of inertia of a plane area. You may assume that the rim breadth is approximately 2. To do this, I have the following setup: In this experiment I change the distance between the centre of the rotating disc and the central axis. What is the retarding torque on the flywheel? A) 0. The arms may have to carry the full torque load due to high inertia of the flywheel when the energy input to its shaft is cut off. Be familiar with the concepts of the radius of curvature of a section of a beam (and its reciprocal, the curvature), second moment of area, polar moment of inertia, beam stiffness and torsional stiffness. Lab M4: The Torsional Pendulum and Moment of Inertia Introduction A torsional pendulum, or torsional oscillator, consists of a disk-like mass suspended from a thin rod or wire. What is LASER? The term LASER stands for Light Amplification by Stimulated Emission of Radiation. Compute the voltage drop across R s and find the time constant for the R-L circuit in Figure 2. Gear Train 22. 05 kg and R= 4cm. The moment of inertia of any body having a shape that. com is the leading job site in the Middle East and North Africa, connecting job seekers with employers looking to hire. reading moving toward conflict, american issues a documentary reader questions, reading study guide growth in the west, chapter 12 reading guide chemistry Engineering Physics lab experiments Important Viva-Voce questions part-1 (Engineering Physics Lab. List of Experiments Mechanics: 1. 14) When can a dielectric be strongly polarized? A dielectric can be strongly polarized at lower temperature with stronger applied electric field. It emits laser light when it is forward biased. The Moment Of Inertia Of The Flywheel Is 0. 10-27-99 Sections 8. Magnetic Flywheel working principle New Invention in The Experiment based on moment of inertia by IIT kanpur. 2 will be short answer type of 5 marks. acceleration & static test stand A separate 'Acceleration and Static Test Stand' (TM1018a) gives extra experiments in measuring angular acceleration and static efficiency. Capilliary viscometer experiment, 4. The Mass Moment of Inertia of the physical object can be expressed as the sum of Products of the mass and square of its perpendicular distance from the point which is fixed (A point which causes the moment about the axis Passing thru it). But there is an additional twist. Using the Perpendicular Axis Theorem and equ. The Moment Of Inertia Of The Flywheel Is 0. In this experiment, the flywheel rotates freely about a horizontal axis. Apparatus: Fly wheel, weight hanger, slotted weights, stop watch, metre scale. The moment of inertia of this element, located at a distance x from the axis of rotation, is dI = pAx. -Experiment 8. If you want to witty books, lots of novels, tale, jokes,. Physicslab Sonometer Viva Questions 01. 2597 Views. The moment of inertia about an axis perpendicular to the movement of the rigid system and through the center of mass is known as the polar moment of inertia. Gear Train 22. In order to determine the mass moment of inertia of a flywheel of radius 600 mm, a 12-kg block is attached to a wire that is wrapped around the flywheel. An optical sensor connected to a data recorder measures the angular speed of the turntable. To determine the Moment of Inertia of a Flywheel. The moment of inertia of the cross arm my group measured with the conservation of energy equation is: 0. Flywheel moment of inertia experiment, 3. Every day, thousands of new job vacancies are listed on the award-winning platform from the region's top employers. Experiments have been described systematically covering all parts, especially the procedure has been given step-wise. (aCalculate the moment of inertia of the flywheel. If the radius of the disk is 1. , (1) In Equation (1), Ek is kinetic energy, I is moment of inertia and ω is the angular velocity of the flywheel. Experiment on Trusses 11. Join us on Facebook. Two questions will be set from each of the four sections. We've looked at the rotational equivalents of displacement, velocity, and acceleration; now we'll extend the parallel between straight-line motion and rotational motion by investigating the rotational equivalent of force, which is torque. a)What is the moment of inertia of the fly- wheel?. In a lab experiment, a student brings up the rotational speed of a rotational motion apparatus to 30 rpm. /sec)Calculate the maximum shear stress at the end of a vertical and horizontal diameter in a plane close to the flywheel. Pre-Laboratory Work [2pts] 1. Then, when you let the car go, the flywheel continues to spin because of rotational inertia, and so turns the wheels. Portal Frame 27. Practical Exam Young's Modulus - Viva Voice Question With Answer For: Science Class 11 | Physics. The liquid inside tries to move away from the axis of rotation and increase its moment of inertia. Elasticity: Relation between Elastic constants. Angular Equations of Motion Angular equations of motion describe a body's rotational motion over time. Why in the experiment of finding the MOI of flywheel about its own axis the string used should be of very small diameter compared with the diameter of the axle? Why is the string of appreciable thickness half of its thickness should be added to the radius of the axle to get the effective value of r?. (1) from above it can be shown that: equ. 1, December 23, 1997 Page 1 EXPERIMENT: MOMENT OF INERTIA OBJECTIVES : 1) To familiarize yourself with the concept of the moment of inertia, I, which plays the same role in the description of the rotation of the rigid body as the mass plays in the description of its steady motion. c) Determination of Mass Moment of Inertia using bifilar suspension and compound pendulum. r = radius (m) T = torque or moment (Nm) Power transmitted. What are some of the viva questions on the moment of inertia of a flywheel (physics)? The atoms comprising the wheel can be regarded as being in concentric circular layers. Practical Exam Young’s Modulus – Viva Voice Question With Answer For: Science Class 11 | Physics. Then we make some assumptions. What will happen to the equation ma=-kx, when dissipative forces are also taken into the account? 3. 4J, what is the average torque exerted by the string as it’s being pulled?. 8 Kg Is Attached To A Wire That Is Wrapped Around The Flywheel Such That No Slipping Can Occur. If the final rotational kinetic energy of the spinning top is 0. It depends upon the. 05 kg and R= 4cm. But there is an additional twist. 025 where F h is the force your hand exerts on the ring, so F h =650/0. Moments or Torques The rotational analogue of force. Moment of Inertia A cylinder, a disk, and a ring with same mass. Find the moment of inertia of the empty rotating table. Armature resistance 6. The amount of energy stored in a flywheel is proportional to the square of its rotational speed. Experiment on Trusses 11. 900-m-long arms which are 3. Question no. Experiments have been described systematically covering all parts, especially the procedure has been given step-wise. Description of the apparatus: The flywheel was set as shown with the axle of the flywheel straight or parallel. 1×104 revolutions per minute. Since mass is a measure of the inertia of a body we might reasonably expect the moment of inertia of a body to depend on the mass. The Moment Of Inertia Of The Flywheel Is 0. (1) k x: equ. is mounted on a shaft 3in. Ultimate Shear Strength 5. Question: In a lab experiment, a student brings up the angular speed of a flywheel to 50 rpm. Physics 1 question on tension and inertia - Answered by a verified Tutor We use cookies to give you the best possible experience on our website. The liquid inside tries to move away from the axis of rotation and increase its moment of inertia. Make sure that. , the opposition that the body exhibits to having its speed of rotation about an axis altered by the application of a torque (turning force). 67 M; However, Because Of Its Nonstandard Geometry Its Moment Of Inertia About Its Center Of Mass Must Be Determined Experimentally. Every student will have to perform at least five (05) experiments from each group. Video Prepared by : Kongunadu College of. Experiment (. Chapter 5 Dynamics Force Analysis And Flywheel - Theory of Machine, Mechanical Engineering Mechanical Engineering Notes | EduRev notes for Mechanical Engineering is made by best teachers who have written some of the best books of Mechanical Engineering. w,a_igt)tS, According to. This is a 2D state of stress – only the independent stress components are named. Students test each part to discover the difference between potential and kinetic energy and the transfer of energy from one form to another. Determination of "g" and radius of gyration by Bar Pendulum. The moment of inertia of the flywheel is 0. Rotational kinetic energy of flywheel is. 5kg on the free end of the cord (holding the flywheel stationary),i then raised or lowered the hanging mass to a measured distance of 1. Ambulation on balance beam. To answer this question, you decide to make a laboratory model to measure the moment of inertia of a ring/disk/shaft/spool system when the ring is off-axis and compare it to the moment of inertia for a system with a ring in the center. When you "rev it up" the flywheel begins to spin. 1 Verify that the time period of the simple pendulum is directly proportional to square root of its length and hence find the value of 'g' from graph. b) Determination of Mass Moment of Inertia of axisymmetric bodies using Turn Table apparatus. 8 N , air resistance to be ignored. A multi-input multioutput system is converted into a single-input single-output control system with complex coefficient by variable reconstruction, and the stability equivalence of the systems before and after variable. 250: LECTURE XVII. 5 Explain the moment of inertia of a plane area. Portal Frame 27. Moment of inertia of flywheel. 3 Momentof Inertia -Dependenceof I on R2 The moment of inertia for a mass point is mR2. Short questions with answers on Flywheel. It is only constant for a particular rigid body and a particular axis of rotation. 25kg and diameter 15cm is spinning at 200 […]. 25kg and diameter 15cm is spinning at 200 […]. Kinetics also takes into account the cause of the motion. 00-kg metal ring of radius 0. Consequently, the radius of gyration is given by The physical interpretation of the radius of gyration is that it is the radius of a uniform thin hoop (or ring), having the same moment of inertia (about an axis passing through its geometric center - shown below), as the given body about the specified axis. Browse other questions tagged angular-momentum rotational-dynamics conservation-laws moment-of-inertia or ask your own question. Roithmayr NASA Langley Research Center, Hampton, Virginia, 23681 November 12, 1998 1 Introduction Energy storage and attitude control are accomplished with two separate devices on present spacecraft. PH 212 Labs Lab Policies and Friction and drag slowing a flywheel (an Observation experiment) The moment of inertia of a flywheel (an Application experiment). (This also assumes we are rotating the bodies around the same axis. At the beginning there are general information about the torsional vibration dampers. 2 m , mass 20 kg), it was allowed to roll (from rest) down a 10 degree incline for a distance of 10 metres, the elapsed time was 5 seconds, rolling resistance is guessed at 5. Moment of Inertia. Combined translational and rotational motion In Sect. A motor connected to the flywheel accelerates it from rest to 1430 rev/min. Physics 2107 Moments of Inertia Experiment 1 Read the following background/setup and ensure you are familiar with the theory required for the experiment. b) Determination of Mass Moment of Inertia of axisymmetric bodies using Turn Table apparatus. Magnetic Flywheel working principle New Invention in The Experiment based on moment of inertia by IIT kanpur. 8 N , air resistance to be ignored. 0 rpm to rest, a solid uniform flywheel (Disk) does 2. The speed fluctuation is limited to 2% of mean speed. The moments of inertia for a cylindrical shell, a disk, and a rod are MR2, , and respectively. If the total fluctuation of speed is not exceed to , the mass moment of inertia of the flywheel in is. Moment of inertia of flywheel. The moment of inertia of an object is a numerical value that can be calculated for any rigid body that is undergoing a physical rotation around a fixed axis. Question: 9) In A Laboratory Experiment, A Student Brings Up The Rotational Speed Of A Flywheel To 30. The magnet is removed and the flywheel is made to spin. The mass of the frame is 0. Then, Then, The total moment of inertia is the sum of moments of inertia of the merry-go-round and the child (about the same axis). Non-Inertial Systems: Non-inertial frames and fictitious forces. by Electric Vibrator, Frequency of A. Define moment of inertia. The anisotropic inertia property. A body having moment of inertia o:m2 is. Moment of inertia, in physics, quantitative measure of the rotational inertia of a body—i. If the moment of inertia of a body is I and the wheel is rotating around an axle. Measurement of Moment of inertia of different bodies and proof of parallel axis theorem. Apparatus: Fly wheel, weight hanger, slotted weights, stop watch, metre scale. Regards Prof Barilli. This bending moment lies in the plane of rotation of the flywheel. The percent difference between the experimental moment of inertia (0. Measurement of Capacitance by phasor diagram method. A student has to attempt five question in all. This requires that the part be swung about any axis (other than one that passes through its CG) parallel to that about which the moment is sought and. Short questions with answers on Flywheel. In a laboratory experiment, a student brings up the rotational speed of a flywheel to 30. A body having moment of inertia o:m2 is. Popular Searches: flywheel and typesof flywheel ppt, viva question and answer on flywheel experiment**, flywheel experiment viva questions, bmt lab viva question and answer, ec lav viva question and answer, sonometer experiment viva question and answer, carey foster bridge experiment related viva questionrey foster bridge experiment related viva question,. Moment of Inertia 18. The moment of inertia of the flywheel is 4kgm2 and the moment of inertia of each wheel is 3kgm2. DC MOTOR DRIVES: Starting, Acceleration control, braking,. She then allows it to slow down on its own, and counts 240 revolutions before the apparatus uniformly comes to a stop. Torque Lab Torque Lab. EXPERIMENT NO. Formula used: The moment of inertia of a flywheel is given by following formula: ⎟⎟ ⎠ ⎞ ⎜⎜ ⎝ ⎛ + − π π. Ask question + 100. As shown in Figure 16. Tech (Mechanical and Automation) Indira Gandhi Institute of Tech. Ultimate Shear Strength 5. The torque converter consists of three elements: an impeller, which is turned by the engine flywheel; a reactor that passes this motion on to a turbine; and the turbine itself, which turns the. (5) can be rewritten in the following form,. 29578 o; 1 rad/s = 9. Be familiar with the concepts of the radius of curvature of a section of a beam (and its reciprocal, the curvature), second moment of area, polar moment of inertia, beam stiffness and torsional stiffness. DYNAMICS LAB VIVA QUESTIONS Dynamics Lab Viva questions. The moment of inertia depends not only on the mass of an object, but also on its distribution of mass relative to the axis around which it rotates. 400 m in radius, and a steady pull of 50. If you want to witty books, lots of novels, tale, jokes,. "Y" by bending of beam using optical lever method. Produce torque-angular acceleration graphs and determine rotational inertia experimentally. 025 m, so the torque your hand exerts must be T h =650 N m=F h x0. What is the retarding torque on the flywheel? A) 0. What is flywheel? Give the difference of functioning of flywheel and governor. Moment of Inertia of different bodies and parallel axis theorem Aim: 1) Study moment of inertia of different bodies and 2) prove the parallel axis theorem (Steiner's theorem) Objectives of the experiment (Part 1) Determining the moments of inertia of rotationally symmetric bodies from their period of oscillation on a torsion axle. If the total fluctuation of speed is not exceed to , the mass moment of inertia of the flywheel in is. This video covers the viva-voce of flywheel experiment. The string is pulled for 0. He then allows the apparatus to slow down on its own, and counts 240 revolutions before the apparatus comes to a stop. The crank shaft of the machine is geared to the motor shaft. Moment of inertia of flywheel experiment viva questions 1 See answer Answers Me · Beginner Know the answer? Add it here! techtro Ambitious; The flywheel of a large circular disc will be fitted with a strong projecting axel on both sides. The experiment is conducted by recording the time taken for the respective point of mass to being rotated by a fixed load until the. When inertia is overcome, the weight of the flywheel keeps the motor running. In a laboratory experiment, a student brings up the rotational speed of a flywheel to 30. But there is an additional twist. (1) k x: equ. A motor connected to the flywheel accelerates it from rest to 1430 rev/min. Flywheel or inertia wheel used in a machine act as a temporary reservoir of the energy, which stores energy when the energy supply is more than required for an operation and releases the stored energy when the supply power does not adequate with the needs. Moment of Inertia The moment of inertia of a rigid body is defined by I = Úr2 dm where integration goes through all the mass elements of the body and r is the distance of mass element dm from the axis. If a string is wrapped around it and it is pulled with a force of 1 0 N then its angular velocity after 4 s will be. To determine the moment of inertia of a flywheel. Inertia in Rotational Motion Apparatus Experiments on moment of inertia: TM 611 Rolling Disc on Inclined Plane Table mounted unit for basic experiments on dynamics: TM 612 Flywheel Apparatus Basic principles of rotational motion: TM 161 Compound Pendulum Apparatus Pendulum oscillations: TM 162 Bifilar / Trifilar Suspension Apparatus. [pic] The flywheel of an engine has moment of inertia 2. Calculating the second moment of area of geometric figures can be confusing and time consuming by hand, so let this calculator do all the work for you. Calculate value and the calculated value. In a lab experiment, a student brings up the rotational speed of a rotational motion apparatus to 30 rpm. During the experiments, the variable inertial force generated by the variable inertia flywheel in response to the changes in the excitation inputs is in good agreement with the prediction of the. 4 K g / m 2 and radius 0. To study Random Errors. The moment of inertia of the flywheel and axle is I. in the second example it is not. A flywheel consisting of a solid, uniform disc is free to rotate about a fixed axis as shown in Figure 1A. But -- I have an interesting thought for you - Being you want to experiment. The axle is mounted on ball bearings on two. Originally published by: Simularity Institute 3 May 1977 Bruce E. The object in the diagram below consists of five thin cylinders arranged in a circle. Classical Mechanics-Rotational Motion Of Flywheels by LearnOnline Through OCW. To find the moment of inertia of flywheel. b) Determination of Mass Moment of Inertia of axisymmetric bodies using Turn Table apparatus. This clock was built in 1880. The paper presents the analysis of vibrations of the crankshaft system and proposition of its modelling. VIVA QUESTIONS AND ANSWERS. In Section 3. The basic relationship between moment of inertia and angular acceleration is that the larger the moment of inertia, the smaller is the angular acceleration. We've looked at the rotational equivalents of displacement, velocity, and acceleration; now we'll extend the parallel between straight-line motion and rotational motion by investigating the rotational equivalent of force, which is torque. One can define the moment of inertia as the ratio of the angular moment to the angular velocity of the particular object moving at its principal axis. A flywheel of moment of inertia 0. The cross-section of the ring is 50 mm by 50 mm. Question: Problem 3 A Flywheel Has A Radius Of 0. Tech 1st Year (All streams) This video describes sample important viva voce questions. Study of Soft massive spring. If I1 is the moment of inertia of this object with respect to an axis passing through the center of the rod and perpendicular to it and I2 is the moment of inertia with respect to an axis passing through one of the masses we can say that. W = work (Joules) θ = angle. determine the moment of inertia of the flywheel. Assume the frictional torque at the bearings is constant and the same as in question 02. In this experiment, the flywheel rotates freely about a horizontal axis. If the length of the outer cylinder is 10 cm, its inner and outer radii are 9. rotation axis, as a quantity that decides the amount of torque required for a desired angular acceleration or a property of a body due to which it resists angular acceleration. The flywheel consists of a heavy circular disc or wheel with a strong axle mounted on ball bearings on two fixed supports. Next, a flywheel of the known moment of inertia I 1 is keyed on to the shaft of the machine. How does a Flywheel work, why is it important and what is the purpose? What is energy, inertial moment and angular velocity. The amplitude of vibration is maximum at 21. of the area from that axis is known as second moment of area. For example, if two disks have the same mass but one has all the mass around the rim and the other is solid, then the disks would have different moments of inertia. Specially developed for the Mechanical Engineering freshers and professionals, these. Tensile Test 2. Classical Mechanics-Rotational Motion Of Flywheels by LearnOnline Through OCW. Join us on Facebook. Energy Skate Park Simulation - Conservation of Energy. The experiment results have been used along with both models to estimate the MMI of the flywheel. Measurement of mass moment of inertia. Experiment on Trusses 11. There are formulas for basic shapes. Dear Readers, Welcome to Theory of Machines - 1 multiple choice questions and answers with explanation. In the experiment, a flywheel was mounted on a bench and a piece of string was wrapped round the axle, then over a pulley and masses were hung from the other end of the string. THE FLYWHEEL-18-The moment of inertia, I, is determined by imagining that the body is divided into a number of infinitesimal elements of mass /mi each at a distance ri from the axis of rotation. Experiments have been described systematically covering all parts, especially the procedure has been given step-wise. 0 m/s, assuming 90. Experiment (. Moment of Inertia The Moment of Inertia is an objects resistance to angular acceleration. Energy Conservation Code (IECC) as the standard for new public buildings. Department of Physics Physics Lab Viva Voce Questions and its answers Laser Parameters 1. 9 cm respectively, calculate an approximate value for the moment of inertia of the flywheel (all values are approximate, and may not. Well in mechanical terms, a flywheel puller is a tool you would use to pull a flywheel off from a crankshaft or rotating assembly. If the final rotational kinetic energy of the spinning top is 0. The flywheel is accelerated by the couple applied by the mass m. Apparatus: I. The moments of inertia for a cylindrical shell, a disk, and a rod are MR2, , and respectively. Energy is transferred to a flywheel by the application of a torque to it, thereby increasing its rotational speed, and hence its stored energy. 1 Increase Motor Inertia/Load Inertia Ratio. element of length dx is given by A dx, and the mass dm of the element is pA dx. What is Fermi level?. 0850 kg ? m2. 0-kg skater is approximated as a cylinder that has a 0. Should be in the back of a physics 101 book. Get information about the supplies you need and the steps for each of these activities. Energy due to rotation of uniform flywheel is E = 5. The flywheel of an engine consists essentially of a thin cast-iron ring of mean diameter 2 m. You may use clamps to mount the Test Stand temporarily on the edge of a desk, but TecQuipment recommend a more permanent fixing to the desk or to a wall. Measurement of radius of gyration of various components. : For example, imagine two flywheels like the one shown here, one made of aluminium (density about 2 70 0 kgm-3) and the other of lead, density about 1 1 30 0 kgm-3). Its moment of inertia about its axis is. The string is pulled for 0. Define young‟s modulus. Piston Crank 24. With less engine inertia, the engine slows quicker on the upshift and the blip of the throttle matches revs on the downshifts. But -- I have an interesting thought for you - Being you want to experiment. Apparatus: Flywheel, two weights of about 300 and 200 gm. Experiments on Gyroscope (Demonstration only) VIVA VOCE QUESTIONS 63-69 REFERENCES 70. general strategy:. 05 kg and R= 4cm. If a string is wrapped around it and it is pulled with a force of 1 0 N then its angular velocity after 4 s will be. For all the questions highlighted, the questions should be copied and pasted into the student’s lab report and explicitly answered immediately thereafter. When the mass is twisted about the axis of the wire, the wire exerts a torque on the mass, tending to rotate it back to its original position. Accelerometer/LVDT experiment, 8. This video covers the viva-voce of flywheel experiment. Produce torque-angular acceleration graphs and determine rotational inertia experimentally. To do this, I have the following setup: In this experiment I change the distance between the centre of the rotating disc and the central axis. Moment Of Inertia Lab Report Conclusion. It is collection of the most important questions to be asked for this experiment. In The Experiment, A Block Of Mass = 11. For example, the moment of inertia of a solid cylinder of mass M and radius R about its axis of symmetry is ½MR 2. What are the precautions to be taken care of and what are the assumptions made while studying the mass spring system? 2. 1 rad = 360 o / 2 π =~ 57. 29578 o; 1 rad/s = 9. If the final rotational kinetic energy of the spinning top is 0. The moment of inertia of a point mass is. To find the moment of inertia of a fly- wheel. Inertia describes the relative amount of resistance to change that an object possesses. Can you please show me how to do it. The gyroscopeis supported on a single pivot javascript:void(0); with its center of mass a horizontaldistance of 4. 2 m is free to rotate about a central axis. Calculation of moment of inertia for rectangular, cylindrical and spherical bodies. 1 3 Option uestions Answer all of the questions from one of the options. Then its rotational kinetic energy, E = ½ Iω 2. 9 cm respectively, calculate an approximate value for the moment of inertia of the flywheel (all values are approximate, and may not. The principle of. Th:o~~wheeJ, alimer, a meter _ stick, a and _ haogl. 6 State methods for moment of inertia – Routh’s rule & Integration method. The lump of. If you do the experiment with copper wire of same diameter as that of Brass wire, is. The mass is adjusted until its weight is just sufficient to overcome frictional resistance and rotate the flywheel without acceleration. Capilliary viscometer experiment, 4. What are transverse waves?. Answer: For small oscillations about the horizontal the torque produced by the weight of the object acting on a moment arm. (1) Determine the moment of inertia and angular acceleration of a flywheel. A flywheel is a mechanical device specifically designed to efficiently store rotational energy (kinetic energy), which is proportional to the square of its rotational speed and its mass. —The Storing of Energy. Understanding the Dropping of the Spinning Ball Experiment. Appratus: Flywheel , Vernier calipers, weight , string. If two wheels have the same weight, but one has a radius 1" (15" to 17") bigger, the MOI of the bigger wheel will be nearly 30% higher. This requires that the part be swung about any axis (other than one that passes through its CG) parallel to that about which the moment is sought and. viva question answer of flywheel experiment pdf Aim: To determine the moment of inertia of a flywheel. Investigation of the laws of vibration of stretched strings by sonometer or electromagnetic method. So mass will be equal to 5. The fact that the period of oscillation of a torsion pendulum is constant for a given moment of inertia and wire is used to build clocks. An energy storage system based on a flywheel (a rotating disk) can store a maximum of 3. Then, when you let the car go, the flywheel continues to spin because of rotational inertia, and so turns the wheels. Theory: If a part has been designed and built, its mass moment of inertia can be determined approximately by a simple experiment. If the shaft is transmitting 40 h. 000278 Nm but I don't understand how to get the answer. Question Paper Structure 1. But there is an additional twist. 7 Prepared by: Muhammad Hassam Q. THEORY of MACHINES Questions and Answers pdf free download,objective type interview questions and answers,lab viva,online quiz,bits,test mcqs. The Radius of Gyration k x of an Area (A) about an axis (x) is defined as: equ. Find the moment of inertia of the empty rotating table. a) Determination of Mass moment of inertia of Fly wheel and Axle system. Moment Of Inertia Lab Report Conclusion. (Fourth semester) Mechanical engineering. The kinetic energy stored is determined by Equation (1). A rimmed flywheel has a rim, a hub, and spokes. Answer all questions. For instance, a 16" diameter steel flywheel that is 39-1/2. When the mass is twisted about the axis of the wire, the wire exerts a torque on the mass, tending to rotate it back to its original position. 136 TOP Engineering Mechanics - Mechanical Engineering Multiple choice Questions and Answers The units of moment of inertia of mass are (a) kg m2 (b) m4. The Moment of Inertia Apparatus MATERIALS 1 Table clamp 1 Weight hanger (mass 50g) 1 Long metal rod 1 Length of. You may assume that the rim breadth is approximately 2. Rotation and moment of inertia (angular analogue of linear motion, how to find moment of inertia) 7. The amplitude of vibration is maximum at 21. element of length dx is given by A dx, and the mass dm of the element is pA dx. 6) The mass moment of inertia of a 400-kg solid disk of radius 2. Calculation of the flywheel's moment of inertia can be more easily analysed by applying various simplifications. The first model considers the effect of mass moment of inertia only, while the second model takes the effect of friction in the ball bearings into consideration. Lighter is better, but the more important factor is Moment of Inertia, which changes based on the square (I = kmr squared) of the radius. To find the rotational inertia of a point mass experimentally, a known torque is applied to the object and the resulting angular acceleration is measured. (b) The skater with arms extended is approximately a cylinder that is 52. J, Polar moment of inertia. small radial axle: R r:. Experiments have been described systematically covering all parts, especially the procedure has been given step-wise. $\endgroup$ – Chuck ♦ May 26 '15 at 17:31 $\begingroup$ #1 is the image on the right (holding at the end), #2 is the image on the left. Determining the moment of inertia of a rod. Theory: Theoretically, the rotational inertia, I, of a point mass is given by I = MR2, where M is the mass, R is the distance the mass is from the axis of rotation. Big, heavy objects will have a high moment of inertia and be hard to turn; smaller, awkwardly shaped objects can also have high moments of inertia and can be just as hard to turn. Cotton string, stop watch, set square, meter rod and vernier calipers'. The moment of inertia depends not only on the mass of an object, but also on its distribution of mass relative to the axis around which it rotates. Helical Gear 32. What is the retarding torque on the flywheel? A) 0. Short questions with answers on Flywheel. Can you think of its practical applications? Objective: To determine the moment of inertia. Video Prepared by : Kongunadu College of. Belt Friction 2 Quadcopter Design Elastic curve problems Exam 8 August 2019, questions Bellini 2008 - eye blink Steam Tables - Summary Preview text Experiment: Determine friction in axel bearing using Axel Friction Apparatus. To find the moment of inertia of flywheel. The 20 physics questions given below are both interesting and highly challenging. A thin disk has been. THEORY of MACHINES Questions and Answers pdf free download,objective type interview questions and answers,lab viva,online quiz,bits,test mcqs. The Experiment: A good way to detect a field whose effect is a spatial inertial anisotropy is to use a time measurement based on an inertial property of space and compare it to a remote reference. Newton's Second Law. 1 Increase Motor Inertia/Load Inertia Ratio. Finally, using the rod's moment of inertia and angular velocity, the spinning rod's angular momentum will be determined at two points: when the weight has fallen halfway and when it has reached the end of its travel. Helical Gear 32. (2) Where I x is the Moment of Inertia about the axis (x), and A is the area. She then allows the flywheel to slow down on its own and counts 85 revolutions before it comes to a stop. The top has a moment of inertia of 1/4 MR^2 where M= 0. Figure 3 shows the turntable with a small lump of plasticine held above it. Perform analysis of braking system for various vehicles. EXPERIMENT NO. Perform analysis of braking system for various vehicles. Forces and Motion. Moment of inertia quantifies the rotational inertia of a rigid body and can be expressed as. It is the resistance against twisting, summation of 2 moment of area about x-axis. Bending Strength Test 4. It is used to determine the moment of inertia. She then allows the apparatus to slow down on its own, and counts 240 revolutions before the apparatus comes to a stop. Chemical Engineering. A hard-boiled egg is rigid and spins with a uniform angular speed. In a lab experiment, a student brings up the rotational speed of a rotational motion apparatus to 30 rpm. So, in this quick video I'm going to show you how the moment of inertia of a system has to do with how the mass is distributed, how the masses are spread out around the axis of rotation, let's check it out, so it says, here, the moment of inertia I has to do with how mass is distributed, how its spread out around an axis of rotation. Road racers report that the lighter flywheel makes a difference in matching revs on upshifts and downshifts. the moment of inertia of the flywheel is 0. Analyze: How is the moment of inertia related to the radius? Practice: The moment of inertia for a single object is given by the formula I = mr 2. This is just one of the solutions for you to be successful. The purpose of this experiment is to find the rotational inertia of a point mass experimentally and to verify that this value corresponds to the calculated theoretical value. Apparatus: Fly wheel, weight hanger, slotted weights, stop watch, metre scale. The moment of inertia of an object is a calculated measure for a rigid body that is undergoing rotational motion around a fixed axis: that is to say, it measures how difficult it would be to change an object's current rotational speed. If the final rotational kinetic energy of the spinning top is 0. The aim of dynamics is to calculate the stress and strain on components or systems in order to be able to. If two wheels have the same weight, but one has a radius 1" (15" to 17") bigger, the MOI of the bigger wheel will be nearly 30% higher. 4) The figure shows scale drawings of four objects, each of the same mass and uniform thickness, with the mass distributed uniformly. Note: Perform any one experiment from the following. (Fourth semester) Mechanical engineering. Rockwell Hardness Test 7. But there, only the top platform rotates and with the presence of ball bearings. There will be 4 questions of the moment of inertia, radius of gyration. viva question answer of flywheel experiment pdf Aim: To determine the moment of inertia of a flywheel. Motion involving both translation and rotation. Students test each part to discover the difference between potential and kinetic energy and the transfer of energy from one form to another. UG Lab-2 is mainly equipped with Mechanics & Electricity and magnetism experiments such as Determination of Moment of Inertia of a Fly Wheel, Acceleration due gravity by Bar Pendulum, Frequency of A. Then, Then, The total moment of inertia is the sum of moments of inertia of the merry-go-round and the child (about the same axis). Unit-III Properties of Surfaces & Moments and Products of inertia : First moment of an area and the centroid, principal axes, formal definition of inertia quantities, relation between mass-inertia terms and area-inertia terms, translation of coordinate axes, transportation properties of the inertia terms, a brief introduction to tensors, the. Measuring the Moment of Inertia of a Flywheel Objective ===== Measure the angular velocity of a flywheel and use conservation of energy to calculate its moment of inertia. 5kgm 2 (c) 2. In the case of flywheel, the whole thing rotates.