Sum of torque

[EOW]

This case is better, I found the torque at 0.74 at top, 0.37 at the center and 0.26 from the torque of the blue wall. 0.74-0.34-0.26=0.11

[EOW]

I added all informations for verify my calculations, if someone has a little time to verify and tell me if it is correct ?

[dieter]

Sorry, I was offline for a while.

I had in mind to simulate magnets together with normal newtonian physics, but it turned out to be rather complicated, so I started programming a magnet simulation entirely in Blitz (without ODE).

It works, a bit too well tho: my permanent magnet motor works in almost every configuration :-) very much unlike in real live.

ODE has all kinds of links, also friction and things. I did some basic tests, like a curtain or chains, a rotor with hinge, stuff like that.

If one takes some time to get into ODE, I think such devices as you designed can be simulated quite effectively.

At least this is a package that works out of the box and you don't have to compile the ODE Api by your own.  (that is for "DC"'s api distro)

[EOW]

It could be useful to simulate.

I drawn the device in many positions. Note if I don't use the ground for the force F1, the sum of energy is always at 0. If I use the ground for F1, I can win an energy in a few positions like the first I drawn, the angle is pi/2 I think. In other cases when I can't win an energy, I don't use the ground for the force F1. I wait the next good position and I use the ground.

[dieter]

To me equations are the secret code of the academic class ... invented to disguise simple terms in a dense fog of mysterious haze and archaic greek letters . <:^)

Anyway, I made a package for ODE , see also PM.