A 1.8 kg collar A and 0.7 kg collar B can slide without friction on a frame. The frame consists of vertical rod CD and horizontal rod AE (only a portion of the horizontal rod is shown). The frame is also free to rotate about rod CD. The collars are connected by an inextensible cord running over a pulley that is attached to the frame at O. At the instant shown the collar A has a velocity of VA=2.1 m/s and a stop at B prevents collar B from moving. If the stop at B is removed, determine the velocity of collar A, when collar B comes to a rest before hitting pulley O. Also assume that collar A does not come off rod AE D C B 0.1 m VA A E