A) Rotational InertiaPhy201: General Physics I LaboratoryInstructor: Tony Zable 1Experiment: Torque & RotationObjectives- To compare the rotational motion of objects rolling down an incline- Calculate the moment of inertia for various objects- To apply the concept of torque and mechanical equilibrium to a balanced meter stick- Calculate the mass of a meter stick knowing the conditions of equilibrium of a rigidbodyPreliminary Questions:In their final appearance in the physics lab, Brad and Angelina are sitting on a teeter-totter. Ignore the effects of friction and mass of their egos as well as that of the teeter-totter.a) Brad (with a mass of 80 kg) sits 2.0 m from the fulcrum. What is the torque exerted by Brad on the teeter-totter?b) For the teeter-totter to balance with Angelina sitting on the opposing end, how much torque must she exert on the teeter-totter? c) Draw a simple force vector diagram of the 2-person teeter-totter system.d) If Angelina has a mass of 50 kg, how far from the fulcrum must she sit so that the teeter-totter balances?Phy201: General Physics I LaboratoryInstructor: Tony Zable 2A) Rotational Inertia1) Obtain a hollow cylinder (a tin can with both ends cut out), a solid can (a full can of “ravioli” ought to do the trick), a solid (steel bearing) and a hollow sphere (racquetball).2) Using a collision track, set-up a ramp at a slight incline.3) Measure a 1.0 m distance along the incline. Use tape to mark the beginning and endpoints.4) Using a stop watch, measure the time it takes for the hollow cylinder to roll 1.0 m down the ramp. Record the distance and time in the data table below.5) Repeat for each object.Object xalong ramp(m)t(s)Average Acceleration(m/s2)Question: Which object reached the bottom in the shortest amount of time? Arrange the objects in order time (shortest to longest).6) Calculate the average acceleration of each object. Use the following equation from kinematics:aaverage = 2.x/t2Record the acceleration values in the table above.Question: Arrange the objects in order average acceleration (highest to lowest).-x =1.0 mPhy201: General Physics I LaboratoryInstructor: Tony Zable 37) Using your textbook as a reference, calculate the moment of inertia for the following objects: {For these calculations, assume that the mass (m) of each object is 0.1 kg and the radius, r, is 0.5 m}a) a solid discb) a ring (or hollow cylinder)c) a solid sphered) a hollow sphereQuestion: Which of the above objects has the smallest rotational inertia? Arrange the objects in order their rotational inertia (low to high).Question: How does the order of rotational inertia values compare with the order of time and acceleration values above?Phy201: General Physics I LaboratoryInstructor: Tony Zable 4B) Mechanical Equilibrium & Torque: 1) Find the position of the knife-edge that balances the meter stick (do not weigh the meterstick ahead of time). This locates the center of gravity for the meter stick.2) Attach a 200 gram mass at the 90 cm position. 3) Re-adjust the position of the knife edge such that the meter stick is once again balanced.4) Draw a force vector diagram for the meter stick.5) Apply Newton’s 2nd Law to the meter stick:Force:Torque:6) From the conditions of equilibrium, -F=0 and --=0, calculate the mass of the meterstick. Calculated mmeter stick = _____________7) Check this value by a direct weighing of the stick. Also, calculate the % error.Measured mmeter stick = _____________% Error = _____________Final Question: Brad and Angelina are sitting together on one end of a teeter-totter (mteeter-totter = 20 kg) while Jennifer (mjennifer = 45 kg) is sitting on the opposite end. Brad (mbrad = 80 kg) sits 1.5 m from the fulcrum and Angelina (mangelina = 50 kg) shamelessly nudges against him sitting 1.8 m from the fulcrum.KNIFE EDGE.100 gc.g.Phy201: General Physics I LaboratoryInstructor: Tony Zable 5a) Draw a simple force vector diagram of the 3-person teeter-totter system.b) Apply Newton’s 2nd Law (torque-only) to the balanced teeter-totter.c) For the teeter-totter to balance with Jennifer on the opposing end, how much torque mustshe exert on the teeter-totter? d) How far from the fulcrum must Jennifer sit so that the teeter-totter balances?e) Apply Newton’s 2nd Law (for force-only) to the balanced teeter-totter.f) How much force does the fulcrum exert on the