The small end rollers of the 8-lb uniform slender bar are constrained to move in the slots, which lie in a vertical plane. At the instant when ? = 30° the angular velocity of the bar is 2red/sec counterclockwise. Determine the angular acceleration of the bar, the reactions at A and B, and the accelerations of points A and B under the action of the 6-lb force P. Neglect the friction and mass of the small rollers.
