A spring within a spring launcher is compressed a distance, x, and locked into position by a pin at point P. A spherical ball M is placed onto the compressed spring. When the pin is removed, the spring accelerates the ball upwards until the ball then reaches some maximum height above the spring, HM. Assume the compression of the spring is small in comparison to the maximum height reached by the launched ball. The ball is then replaced by a ball having one 1 third the mass, , M. The same spring is compressed the same distance, , and the new ball is launched.\f