It's funny because I was just looking up perpetual motion in this one book. I appreciate how good the animation is. I do think it's too short. Then again, you don't need to do much with it. That's probably the closest you could get to one. I think you'd have to remove all friction.
The music was really fun. It was just something done with high spirits. I hope PETA doesn't see this. The old man looked like someone from a Pixar movie. In fact, this kind of has the feel of a Pixar short film.