Question

A block of mass M = 0.500 kg is released from rest at a height h to slide down a frictionless curved incline. Block M collides elastically with a stationary block of mass m = 0.250 kg which following the collision slides up the frictionless loop-the-loop track. Determine the minimum height h required such that at the top of the loop-the-loop track block m has the minimum velocity needed to remain in contact with the track. The loop-the-loop track has a radius R = 0.75m.