Sum of torque

[EOW]

Thanks Dieter, I will try to simulate it because I don't find the error in this device. I'm not sure the device is well explained...
If someone knows maths I will appreciate comments or questions about the device.

When I wrote the wheel moves and rotates, it is at the time I studied the sum of energy. Like the device can accelerate or decelerate it is not easy to count the energy, so it is easier to think with an external device ED that force the wheel to move to the right and rotate in the same time, that device ED recovers an energy for some forces or moments and needs an energy for others forces/moments. I count these energies.

I corrected some errors in my drawings. I gave the sum of energy with formulas.

Axes:
   The green axis is fixed on the wheel

Fixed bodies:
   The ground
   The device that gives the force Fq

Discreet mobile bodies:
   All the device moves in translation and rotates clockwise like a wheel of a bike

   The red wall
   The outer circle of the wheel and the blue wall (blue color = one body)
   N balls (small like molecules of water, just for simplify the calculations), without mass (simplify)
   N springs, without mass (simplify calculations)
   Gaskets (I don't drawn them)

Connections and constraints:
   The red wall can only turn around the green axis, the red wall is in contact with balls only, the red wall receives the pressure from the balls
   Each ball is attracted by a spring from the center C
   The device like that is unstable but I give the force Fq from an external device fixed on the ground.

Constraints on motion :
   When the wheel moves and rotates, all the device turns and moves, the springs never lost their potential energy because the balls are always in the same relative position

Physical properties of all bodies:

   All bodies are rigid except the springs
   The springs and the balls are without mass
   The wheel has a mass.
   Each ball is attracted with the law 1/d² with 'd' the distance between the center of the wheel and the ball

[dieter]

I was still waiting for you to answer my personal message, so I can mail you the physics sim files, if you want it.

I'm having some access provider troubles here, so I may be offline for a while.

[EOW]

Sorry, I was busy these last days. I sent a pm.

I find the error for the last device but I try with a triangle. I changed only the shape and the point of attraction. I sent equations later.

Have a good day

[EOW]

Maybe like that.

[EOW]

Maybe directly on the circle (no ground)