End a of the uniform 12-kg bar is pinned freely to the collar, which has an acceleration a = 5.0 m/s2 along the fixed horizontal shaft. if the bar has a clockwise angular velocity ω = 1.8 rad/s as it swings past the vertical, determine the components of the force on the bar at a for this instant. ax is positive if to the right, negative if to the left. ay is positive if up, negative if down.