Magnetic Paramagnetic Diamagnetic

[GabrieleCitossi]

Could has this concept some utility? If the approach of the magnet to the two materials (one diamagnetic,one paramagnetic) could be set to be "energy-loss",can be the firing the same? With my simple knowledge of magnetics i can't say nothing. While when approaching, the diamagnetic increase his repulsion while paramagnetic increase his attraction. In exit shouldn't be the same?

 

[CWatters]

I'm not sure I understand your question but the force between two magnetic poles is a conservative force..

https://en.wikipedia.org/wiki/Conservative_force

A conservative force is a force with the property that the work done in moving a particle between two points is independent of the taken path.[1] Equivalently, if a particle travels in a closed loop, the net work done (the sum of the force acting along the path multiplied by the displacement) by a conservative force is zero