Determine the magnitudes of the angular acceleration and the force on the bearing at O for (a) the narrow ring of mass m = 46 kg and (b) the flat circular disk of mass m = 46 kg immediately after each is released from rest in the vertical plane with OC horizontal. The distance r is 210 mm. Answers: (a) The ring: a = rad/s2, FO = N (b) The disk a = rad/s2, FO = N