Figure (10-E4) shows two blocks of masses m and M connected by a string passing over a pulley. The horizontal table over which the mass m slides is smooth. The pulley has a radius r and moment of inertia I about its axis and it can freely rotate about this axis. Find the acceleration of the mass M assuming that the string does not slip on the pulley.
The blocks of masses 4kg, 6 kg and 8 kg are hanging over a fixed pulley as shown. The tension in the string connecting 8kg and 4 kg block is