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I would think that "force" could be used as energy... maybe...

Is it a classic force? I'm wondering if you're planning on producing energy by doing card tricks?

CardMSG wrote:I guess it's a force, but when you put two of the forces together, they repel each other, which must create energy of some form because the magnets jump. One side is constantly pulling and the other side is constantly pushing, so I would think that "force" could be used as energy... maybe...

Well, they're not really forces being generated but fields that are natural parts of the magnets. If they repel, it's because you expended kinetic energy to move one towards the other, and the resultant move is equal and opposite to the energy expended in moving them together, including overcoming friction. Attraction sounds a better deal, but pulling the magnets apart to do it again uses the same amount of energy you put in originally. I gave up physics at A level. The maths was too much, but I think that's about right. There's no hidden energy to get out unless you smash atoms. Mass is energy and that seems to be that.