A narrow bar OA with mass m and length b can rotate in a vertical plane about a fixed, smooth, horizontal axis O. A circular disk with mass m and radius r is rigidly connected to the bar so that its center of mass lies on the extension of the bar. The body is affected which is constant. Determine the angular velocity as a function of the angle of rotation 0, if the rod is at rest then 0 0. M a force pair moment M, You have to draw the free body diagram and kinematic diagram of the figure. A