Perpetual Motion Machines

25 Jul

M1 had been playing with his remote control car before dinner. It was now on the benchtop having its battery charged.

M1 : I want a remote control car that doesn’t need batteries
Me : You mean one that runs on fuel? You can get those.
M1 : I want a remote control car that doesn’t need fuel.
Me : Well, that’s what you’ve got. It runs on batteries.
M1 : (frustrated) No, I want one that doesn’t need fuel, and doesn’t need batteries
Me : You want a perpetual motion machine? There’s no such thing. Perpetual motion machines are impossible.
M1 : (more frustrated) No they’re not. I’m a perpetual motion machine!
Me : “…he said, munching on a nacho chip”
M1 : Argh!


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Leave a Reply


  1. Jeremy

    July 25, 2012 at 8:42 am

    How about a setup with metal balls at the bottom and a ramp upwards at around 30 degrees. Mount a strong magnet on top. Make sure there is a gap between to magnet on top and the ramp. Find the point where the magnet is strong enough to pull up the metal ball at 30 degrees but not strong enough to support the full weight once the ramp finishes thus making the ball fall back to the basket below. As it falls, it will turn a wheel driving a dynamo :) lol

  2. Mike H

    July 25, 2012 at 8:52 am

    Try it, let me know what happens :-)