The system shown in the figure is composed of bar AB which is pin-supported at A and attached to bar BC. The end of bar BC is comected to the slider block C. At the instant shown, the acceleration of point B is 1.125 m/s2 downward and the angular velocity of bar BC is 0.5625 rad/s c 5 3 4 0.5 m What is the angular speed of bar AB? What is the magnitude of the angular acceleration of bar AB? What is the magnitude of the angular acceleration of bar BC? What is the magnitude of the acceleration of slider block C? Which of the vector equations correctly relates the accelerations of point B and point C? Note: w = angular velocity; a = angular acceleration = + (BC X FB/C) + X X FB/C) = + (BC X C. ac = X FC/B) + X FC/B)