A 34 kg hoop of radius 1.3 m, initially rotating at 301 revolutions per minute, is brought smoothly to a stop in 20 s. What is the average power (in Watts) associated with the force that brings the hoop to a stop?

A 34 kg hoop of radius 1.3 m, initially rotating at 301 revolutions per minute, is brought smoothly to a stop in 20 s. What is the average power (in Watts) associated with the force that brings the hoop to a stop?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 104P: An athlete in a gym applies a constant force of 50 N to the pedals of a bicycle to keep the rotation...

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Question

A 34 kg hoop of radius 1.3 m, initially
rotating at 301 revolutions per minute, is
brought smoothly to a stop in 20 s. What is
the average power (in Watts) associated with
the force that brings the hoop to a stop?

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