Rework Problem 10.8 using the relation between work and energy. Problem 10.8 The wheel on a grinder

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Rework Problem 10.8 using the relation between work and energy.


Problem 10.8

The wheel on a grinder is a homogeneous 0.90-kg disk with a 8.0- cm radius. It coasts uniformly to rest from 1400 rpm in a time of 35 s. How large a frictional torque slows its motion?

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