8_ The Atwood's machine shown consists of two blocks of mass m, and mz that are connected by a light string that passes over a pulley of negligible mass and friction. m is initially a distance of h, above the ground and mz is initially a distance of hz above the ground. mz is larger than m, and the two block system is released from rest. Write a statement for the initial mechanical energy of the system. b Write a statement for the total mechanical energy of the system at the moment mz reaches the ground What is the velocity of the system in terms of the other variables (m, mz; h,, hz' g)?
m1
m2