The composite body lies in the vertical plane and is rotating with angular speed ωb = 11 r...

The composite body lies in the vertical plane and is rotating with angular speed ωb = 11 rad/s at the instant shown. The mass of the disk D is mb = 4 kg, the mass of the bar A B is mAB = 1.5 kg, the length of the bar A B is L = 50 cm, and the radius of the disk is R = 10 cm. At the instant shown, determine the angular acceleration of the composite body and the horizontal and vertical reactions on the body at A.

Figure P7.37