College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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Question

You have a grindstone (a disk) that is 90.0 kg, has a 0.340-m radius,
and is turning at 90.0 rpm, and you press a steel axe against it with a
radial force of 20.0 N. (a) Assuming the kinetic coefficient of friction
between steel and stone is 0.20, calculate the angular acceleration of
the grindstone. (b) How many turns will the stone make before coming
to rest?

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