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A large disk with a radius of 12 centimeters and a mass of 15.0 kg is...

A large disk with a radius of 12 centimeters and a mass of 15.0 kg is initially rotating at a rate of 96 revolutions per minute. A brake pad is applied to the edge of the disk, exerting a tangential force of 4.5 Newtons.

(a) What is the disk’s angular acceleration as it slows?

(b) How much time does it take for the disk to stop?

(c) What was the disk’s initial angular momentum?

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