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Why can't an electromagnet hold stationary? I'm not sure I get why it couldn't be done... Enough magnetism between objects makes them VERY difficult to move. Keep going with that principle, and it could be completely impossible for a human to move them.
Granted, this takes a charged coil, which requires electricity, thus energy expense... but there's no reason mechanical brakes couldn't be MUCH smaller anyway for the final "stop and hold" as necessary if electronic/magnetic braking were used.
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"¿ʞɐǝɹɟ ɐ ǝɹ,noʎ uǝɥʍ 'ʇı ʇ,usı 'ʎlǝuol s,ʇı"
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