The collar and clevis A are given a constant upward velocity of 8 in./sec for an interva...

The collar and clevis A are given a constant upward velocity of 8 in./sec for an interval of motion and cause the ball end of the bar to slide in the radial slot in the rotating disk. Determine the angular acceleration of the bar when the bar passes the position for which z = 3 in. The disk turns at the constant rate of 2 rad/sec.