An object of mass m is released from rest at a height h on a vertical spring with force constant k, very light and originally in equilibrium, as shown in figure (6.13). force constant k, very light and originally in equilibrium, as shown in figure (6.13). Find in terms of m, h and k: (a) the velocity of the block just before falling on the spring, b) the maximum compression of the spring, c) the velocity of the block just after leaving the spring, and d) the maximum height the block reaches after bouncing on the spring.