A computer disk drive spins at 7200 rpm when a brief 30, Ask an Expert

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A computer disk drive spins at 7200 rpm when a brief 30 second power outage occurs. During this time the drive slows down due to friction which provides a constant deceleration, and the drive makes exactly 2200 revolutions (but is not at rest).

A) What is the angular speed (in rad/s) of the drive when the power comes on, after 30s?

B) How much time would be needed for the drive to come to rest?

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Category:- Physics
Reference No.:- M9994831

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