I can place the green line far away. The energy from the walls don't change. The energy from the springs don't change.
I can attach the spring in the center of the blue sphere or not, like for the white disks.
With the magenta shape in rotation only.
The difference of energy from the springs of the white disks is not the same compared of springs from the green line only for the white disks.
like that
delta of 0.152 with H=1, and a surface of the container of 1 and a force on the white disk =1
The sum of energy can't be at 0 because the work from the arm with the white disk give a value in function of pi. In the contrary, the others works are with square root.
like that !
with the length of the arms fixed, or decrease the length of the primary arm like i drew and increase the length of the secondary arm, it depends of the sign of energy needed
With a small angle of rotation
all volumes are constant, the deformation of the white disks don't give nor take an energy.
I use the bottom wall and the left wall to cancel the force on the bottom white disk. The bottom white disk has all the force from the others white disks. I deform the shape of the white disks when the container is deformed but I keep constant the volumes. The top of the container is fixed to the ground. The green line like the bottom of the container move to the right.
no need to deform the white disks, the white disk A is taken by the walls directly, no spring for the white disk A.
Even an object there is a difference of energy
with another shape than a disk I have a lateral movement for the blue spheres
with a torque it is better ;)