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Solution: A disk is rotating at 150 rpm. Answer the following question...

Question

A disk is rotating at 150 rpm. Answer the following questions:

(a) What angle, in radians, does the disk rotate through in 25 s if the angular speed is constant?

(b) If a brake is applied to the disk, and it takes 5 revolutions to stop, what was the angular acceleration applied by the break, in rad/s2?