Dennis Edwall Posted January 11, 2016 Share Posted January 11, 2016 Isn't this cute? How long could that wheel spin if he left the two balls in place? https://www.facebook.com/fizikist/videos/943426745706464/ Link to comment Share on other sites More sharing options...
Peter Posted January 11, 2016 Share Posted January 11, 2016 Amazing. It looks like a perpetual motion machine. My guess is the magnets would gradually lose their attraction but I don't know how long it would take. Of course if it were an electromagnet and was kept plugged in, it would be a simple machine in evidence everywhere for about a hundred years now.It reminds me of space travel. We need gravity or simulated gravity for long term survival and simulated designs are always spinning hoops. Gradually the hoop will slow down so jets would use their thrust to keep it spinning. From Wikipedia:In classical mechanics, centrifugal force is an outward force associated with curved motion, that is, rotation about some (possibly not stationary) center. Centrifugal force is one of several so-called pseudo-forces (also known as inertial forces), so named because, unlike fundamental forces, they do not originate in interactions with other bodies situated in the environment of the particle upon which they act. Instead, centrifugal force originates in the curved motion of the frame of reference within which observations are made. Link to comment Share on other sites More sharing options...
BaalChatzaf Posted February 12, 2016 Share Posted February 12, 2016 Sorry fellas. No perpetual motion. Link to comment Share on other sites More sharing options...
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