A disk rotating at 8 rad/s is accelerated at the rate of 1.8 rad/s2 for 7 s.
(a) What is its new angular speed?
(b) Find the angle through which it rotated during the acceleration.
(c ) What is the speed of a point on the rim of the disk before the acceleration?
(d) What is the tangential acceleration of this point? at = 0.216 m/s2
(e) What is the radial acceleration of this point?