The 18-in.-radius flywheel is rigidly attached to a 1.5-in.-radius shaft that can roll along…

The 18-in.-radius flywheel is rigidly attached to a 1.5-in.-radius shaft that can roll along parallel rails. Knowing that at the instant shown the center of the shaft has a velocity of 1.2 in./s and an acceleration of 0.5 in./s2 , both directed down to the left, determine the acceleration (a) of point A, (b) of point B.