Problem 3: Rotational energy (6 pts.) Two masses are connected by a string going over a pulley (which is a solid cylinder). The pulley rotates without friction about a horizontal axis through its Pulley center, and the string does not slip on the pulley. The masses are mleft = 2M, mright = M, and mpulley = = M. The radius of the pulley is R. The blocks are released from rest, and the left block moves a distance h until it hits the ground. Find the speed of the blocks when it hits the ground m right (Hint: The kinetic and potential energies of both blocks change, and the pulley also gains kinetic energy.)