The way the machine worked, was that there was a car that was launched down a ramp (Gravitational energy) and hits a ball down a zip line (Gravitational energy) and hits ball that ball falls into a cup that makes a seesaw move (Mechanical energy) which hits a car down a ramp which hits a bouncy ball that would bounce (Elastic energy) and hit dominos which would make a chain reaction that would hit a glockenspiel