The load L is lowered by the two pulleys which are fastened together and rotate as a single unit. For the instant represented, drum A has a counterclockwise angular velocity of 4 rad/sec which is decreasing by 4 rad/sec each second. Simultaneously, drum B has a clockwise angular velocity of 6 rad/sec, which is increasing by 2 rad/sec each second. Calculate the accelerations of points C and D and of the load L. 6" 6" A -x 10" 20 C L