Question: A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2 rad/s. After the disk rotates through 10 p radians,

A disk rotates with constant angular acceleration. The initial angular speed of the disk is 2π rad/s. After the disk rotates through 10 p radians, the angular speed is 7 π rad/s.
(a) What is the magnitude of the angular acceleration?
(b) How much time did it take for the disk to rotate through 10 p radians?
(c) What is the tangential acceleration of a point located at a distance of 5.0 cm from the center of the disk?

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