ROTATIONAL AND ANGULAR MOTION A pulley rotating in the counterclockwise directions is attached to a mass suspended from a string. The mass causes the pulley's angular velocity to decrease with a constant angular acceleration, a = -2.10 rad/s^2. (a) if the pulley's initial angular velocity is w = 5.40 rad/s, how long does it take for the pulley to come to rest? (b) Through what angle does the pulley turn during this time? (c) if the radius of the pulley is 5.0 cm, through what distance is the mass lifted? v = 0 Final Initial

ROTATIONAL AND ANGULAR MOTION A pulley rotating in the counterclockwise directions is attached to a mass suspended from a string. The mass causes the pulley's angular velocity to decrease with a constant angular acceleration, a = -2.10 rad/s^2. (a) if the pulley's initial angular velocity is w = 5.40 rad/s, how long does it take for the pulley to come to rest? (b) Through what angle does the pulley turn during this time? (c) if the radius of the pulley is 5.0 cm, through what distance is the mass lifted? v = 0 Final Initial

Glencoe Physics: Principles and Problems, Student Edition

1st Edition

ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter8: Rotational Motion

Section: Chapter Questions

Problem 93A

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