If this pulley is subjected to a constant counterclockwise angular acceleration of αa= 3 rad/s2 , determine the angular velocity of pulley b after b turns 5 revolutions. the hub at d is rigidly conne

If this pulley is subjected to a constant counterclockwise angular acceleration of αa= 3 rad/s2 , determine the angular velocity of pulley b after b turns 5 revolutions. the hub at d is rigidly connected to pulley c and turns with it.