A mass hangs by a massless string that is wound around a solid circular pulley of radius 20 cm. There is no friction in the pulley. The block is released from rest, and the pulley goes through three complete rotations (6 n radians) in 4 seconds. 0.2 m What is the magnitude of the angular acceleration? A) 3.1 rad/s? B) 2.4 rad/s? C) 6.3 rad/s? D) 5.2 rad/s2 E) 9.4 rad/s?

A mass hangs by a massless string that is wound around a solid circular pulley of radius 20 cm. There is no friction in the pulley. The block is released from rest, and the pulley goes through three complete rotations (6 n radians) in 4 seconds. 0.2 m What is the magnitude of the angular acceleration? A) 3.1 rad/s? B) 2.4 rad/s? C) 6.3 rad/s? D) 5.2 rad/s2 E) 9.4 rad/s?

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 5STP

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