A machine part has the shape of a solid uniform sphere of mass 225 g and diameter 3.30 cm . It is spinning about a frictionless axle through its center, but at one point on its equator it is scraping against metal, resulting in a friction force of 0.0200 N at that point. How long will it take to decrease its rotational speed by 28.0 rad/s ? Express your answer in seconds.
A machine part has the shape of a solid uniform sphere of mass 225 g and diameter 3.30 cm . It is spinning about a frictionless axle through its center, but at one point on its equator it is scraping against metal, resulting in a friction force of 0.0200 N at that point. How long will it take to decrease its rotational speed by 28.0 rad/s ? Express your answer in seconds.
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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A machine part has the shape of a solid uniform sphere of mass 225 g and diameter 3.30 cm . It is spinning about a frictionless axle through its center, but at one point on its equator it is scraping against metal, resulting in a friction force of 0.0200 N at that point.
How long will it take to decrease its rotational speed by 28.0 rad/s ?
Express your answer in seconds.
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