Member AB has the angular velocity WAB = 2 rad/s and angular acceleration OAB = 5 rad/s. 100 mm Part B aCB D 11 60 450 mm vec AB Determine the angular acceleration of member CB measured counterclockwise. Express your answer using three significant figures. Enter positive value if the angular acceleration is counterclockwise and negative value if the angular acceleration is clockwise. B 15. . 200 mm