The 2.deltadeltadeltadelta lb slender rod AB is pinned at B and supports the rotating disk at A in a horizontal plane.  The 1.5lb disk is given a initial angular velocity of w=5rad/s while the rod AB is held in place.   The rod is then released but friction at bearing A soon brings the rotating disk to rest relative to rod AB.  Determine the angular velocity of rod AB when the disk comes to rest, assuming friction at bearing B is negligible.