A grinding wheel powered by electricity is rotating at 71.1 rad/s when it initially undergoes constant angular acceleration of 4.89 rad/s until the electricity is cut off after 12.1 s. From then on, the rotation of the wheel slowed down until it eventually come to a stop. If the wheel has turned a total of 425 rev during the whole course of its motion, what is the magnitude of the angular acceleration of the wheel as it slowed down?

A grinding wheel powered by electricity is rotating at 71.1 rad/s when it initially undergoes constant angular acceleration of 4.89 rad/s until the electricity is cut off after 12.1 s. From then on, the rotation of the wheel slowed down until it eventually come to a stop. If the wheel has turned a total of 425 rev during the whole course of its motion, what is the magnitude of the angular acceleration of the wheel as it slowed down?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter10: Rotational Motion

Section: Chapter Questions

Problem 7P: An electric motor rotating a workshop grinding wheel at 1.00 102 rev/min is switched off. Assume...

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