A drum having radius r = 0.6 m carrying a load A is rigidly attached to a R = 0.9 m radius pulley carrying the load B as shown. At the time t = 0, the load B moves with a velocity of 2 m/s (downward) and a constant acceleration of  $3m/s^2$ (downward). Over the time interval  $0\le t\le 2\sec$ (Assume no slipping between thread and contact surfaces)