The unbalanced wheel shown rolls without slipping down the inclined surface. The 32-lb wheel has a radius of gyration of 4.25 in. with respect to its axis of rotation. When the wheel is in the position shown it has a counterclockwise angular velocity of 5 rad/s. At this instant, determine the angular acceleration of the wheel and the normal and frictional forces exerted on the wheel by the inclined surface. 3 in. 6 in. 3.