[15 pts] 6. A mass M = 10 kg resting on a horizontal frictionless surface is attached to a M. = 7 kg weight by a light wire that passes over a frictionless pulley. See figure. The pulley has the shape of a uniform disk of mass M. = 4 kg and radius R = 0.3 m. After the system is released, find (a) the tension in the wire on both sides of the pulley, (b) the acceleration of M, and (c) the horizontal and vertical forces that the axle exerts on the pulley. M 1 M 3 M 2