If two magnets, equally but oppositely charged, were placed one on top of the other, such that they repel each other, but the weight and shape would not allow the top magnet to slide off, what energy is generated by the relative weight (gravity acting on the mass) of the top plate overcoming the magnetic rejection force. I realize there should be some heat. Provided the plates remained motionless, wouldn't there be an eletromagetic field generated, actually similar to a motor? Provided the mass of the two plates was sufficient, why couldn't the plates generate usable electricity (provided that coils were embedded in the plates such that the field potential could be captured). Would that not be a conversion of gravity to electrical energy? Would this be possible?