A disk rotates having constant angular acceleration. The initial angular speed of the disk is around 2p rad/s. After the disk rotates via 13p radians, the angular speed is around 9p rad/s.
(i) Determine the magnitude of the angular acceleration?
(ii) Determine how much time did it take for the disk to rotate via 13p radians?
(iii) Determine the tangential acceleration of a point positioned at a distance of 2.6 cm from the center of the disk?