4 ms·In the same way that the pushback from the earth you're standing on is an infinite source of energyby m4x 3y agoIn the same way that the pushback from the earth you're standing on is an infinite source of energysoligern 3y agoIt isn’t though. You can use gravity to apply the weight to the superconductor and the pushback would be against gravity.p1mrx 3y agoYou can also hang a weight on a spring. Neither helps you override the laws of thermodynamics.