A92 The turntable of a record player rotates at a steady angular speed of 3.5 rad s-.Arecord is dropped from rest on to the turntable. Initially, the record slips but eventually it moves with the same angular speed as the turntable. (a) The angie the turntable turns thrrough while the record is siipping on its surface is 0.25 rad. Find the average angular accei- eration of the record while it is attaining the steady speed of the turntable. (b) The moment of inertia of the record about its axis of rotation is 1.1 x 10 kg m. What additional torque must be applied by the turntable motor to maintain the constsnt angular speed of the turntable while the record is accelerating? (C]

A92 The turntable of a record player rotates at a steady angular speed of 3.5 rad s-.Arecord is dropped from rest on to the turntable. Initially, the record slips but eventually it moves with the same angular speed as the turntable. (a) The angie the turntable turns thrrough while the record is siipping on its surface is 0.25 rad. Find the average angular accei- eration of the record while it is attaining the steady speed of the turntable. (b) The moment of inertia of the record about its axis of rotation is 1.1 x 10 kg m. What additional torque must be applied by the turntable motor to maintain the constsnt angular speed of the turntable while the record is accelerating? (C]

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter8: Rotational Equilibrium And Dynamics

Section: Chapter Questions

Problem 39P: A large grinding wheel in the shape of a solid cylinder of radius 0.330 m is free to rotate on a...

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