University Physics (14th Edition)
14th Edition
ISBN: 9780133969290
Author: Hugh D. Young, Roger A. Freedman
Publisher: PEARSON
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Chapter 15, Problem 15.56P
A uniform, 8.40-kg, spherical shell 50.0 cm in diameter has four small 2.00-kg masses attached to its outer surface and equally spaced around it. This combination is spinning about an axis running through the center of the sphere and two of the small masses (Fig. P10.56). What friction torque is needed to reduce its angular speed from 75.0 rpm to 50.0 rpm in 30.0 s?
Figure P10.56
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Chapter 15 Solutions
University Physics (14th Edition)
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