Recover energy from gravity

[rc4]

even with frequency at 10000 the volume moves alone. It's evidence with second case that velocity change like the position of block inside water.

[rc4]

With a macroscopic model with compressible balls it's easy to see additional forces F from balls to solid.

File R1: Works with only 1 ball and 1 spring. If you turn clockwise the system lost energy in the contrary the system win energy. Without the spring the system lost energy clockwise or anticlockwise.

I think this append because circle is not perfect. I try with this new file, it's the same result (file angle1).  Sum of forces on ball is 0, the ball don't move. Sum of forces on system (except ball) is 0, but radius on apply forces of ball are different so there is a torque => energy move up or down depend of the direction of rotation.

Sum of torque is (R)*m1-(R+d)*m2, d is constant, so the relation between radius is (R+d)/R, R can be like I want. The relation between m1/m2 is 1.362/1.292 = 0.07 (look at figures). I can choose R like want sot there is a difference of torque.

[rc4]

The système turn clockwise. The sum of forces WITH friction give a torque. Pieces 1 are link together. Piece 2 is alone. Friction is at 0.5, restituion 0.5.

[HH]

Your compressible balls, thats air, or any other gas. Isn't it?

[HH]

And water is not compressible, it will not get more dense and will not lift your mass. It will leave the container, trying to stay in place.