A disk rotates with constant angular acceleration. The initialangular speed of the disk is 2? rad/s. After the disk rotatesthrough 20? radians, the angular speed is 3? rad/s. (a) What is themagnitude of the angular acceleration? rad/s2 (b) How much time didit take for the disk to rotate through 20? radians? s (c) What isthe tangential acceleration of a point located at a distance of 3cm from the center of the disk? m/s2
