An old phonograph at the record shop just finished playing an album. The owner shuts it off. The record player was rotating at 78 rpm. It slows down and stops 30 s after it is turned off. (a) What is the initial angular speed of the record player, in rad/s? (b) What is the angular acceleration of the record player after it is turned off? (Assume it is constant.) (c) How many revolutions did the record player make as it came to a stop?

An old phonograph at the record shop just finished playing an album. The owner shuts it off. The record player was rotating at 78 rpm. It slows down and stops 30 s after it is turned off. (a) What is the initial angular speed of the record player, in rad/s? (b) What is the angular acceleration of the record player after it is turned off? (Assume it is constant.) (c) How many revolutions did the record player make as it came to a stop?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter7: Rotational Motion And The Law Of Gravity

Section: Chapter Questions

Problem 4WUE: A carnival carousel accelerates nonuniformly from rest, moving through an angle of 8.60 rad in 6.00...

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