Two days ago, I thought of this device, which may seem to rotate indefinitely(in all 3 directions). I have two questions.
- Is this perpetual motion machine already known? If it is, could you please give some references?
- What is the exact mechanism that makes it stop? By this, I mean an explanation, not simply "because it would break energy conservation". Of course energy conservation is true, and of course cannot rotate indefinitely. But for any known (presumed) perpetuum mobile, there was an explanation, usually based on showing that the force generating the motion is balanced by another force.
I made a model in COMSOL of my device(first picture shows a view from the right side of the device, while the second shows it from above).
The device consists of a big magnet, a sphere and an insulator of magnetic field. The idea is to block the magnetic field around half of the sphere, so that only the other part of the sphere will be pulled. Everything is built with Armco iron.
The sphere is with radius 2 meters, and the information, which the program provides about the forces on the sphere are:
Axial torque (N*m) = -0.08622111144594605
Electromagnetic force, x component (N) = -1.069911296291055
Electromagnetic force, y component (N) = -1063.7242803838271
Electromagnetic force, z component (N) = -166.95389061849949
Torque, x component (N*m) = -17.99053531174359
Torque, y component (N*m) = 5.067797194981982
Torque, z component (N*m) = -0.08622111144594605
I would like to make some observations.
- I don't consider an enough explanation simply to refer to the energy conservation. I am interested in an explanation showing exactly how the magnetic forces making it rotate, are balanced.
- If the forces are balanced, only then friction will make it slow down and stop. I don't think that we can explain only by referring to friction, which in principle can be made as small as needed. There has to be a balance of forces.
- Why spending time trying to understand or explain something that admittedly can't work? Well, even though perpetual motion machines cannot actually work, I think they may be interesting as puzzles.