If the angular velocity of the drum is increased uniformly from 6 rad/s when t = 0 to 12...

If the angular velocity of the drum is increased uniformly from 6 rad/s when t = 0 to 12 rad/s when t = 5 s, determine the magnitudes of the velocity and acceleration of points A and B on the belt when t = 1 s. At this instant the points are located as shown.