Ring B has an inner radius us r2 and hangs from the horizontal shaft A as shown. Shaft A rotates with a constant angular velocity of 25 rad/s and no slipping occurs. Knowing that r1 = 0.5 in., r2 = 2.5 in., and r3 = .5

in., determine

(a) The angular velocity of ring B,

(b) The acceleration of the points of shaft A and ring B which are in contact,

(c) The magnitude of the acceleration of a point on the outside surface of ring B.