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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
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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A92 The turntable of a record player rotates at a steady angular spced of 3.5 rad s-.A record is dropped from rest on to the turntable. Initially, the record slips but eventually it moves with the same angalar speed as the turntaible. (a) The angle 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 constent angular speed of the turntable while the record is accelerating? (C]
Transcribed Image Text:A92 The turntable of a record player rotates at a steady angular spced of 3.5 rad s-.A record is dropped from rest on to the turntable. Initially, the record slips but eventually it moves with the same angalar speed as the turntaible. (a) The angle 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 constent angular speed of the turntable while the record is accelerating? (C]
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