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Results tagged with perpetual-motion
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user 183420
Perpetual motion describes "Motion that continues indefinitely without any external source of energy; impossible in practice because of friction." It can also be described as "the motion of a hypothetical machine which, once activated, would run forever unless subject to an external force or to wear". There is a scientific consensus that perpetual motion in an isolated system would violate the first and/or the second law of thermodynamics.
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Are the planets revolving around the sun in perpetual motion? [duplicate]
I was wondering if the planets revolving around the sun are an example of perpetual motion. Will they ever stop the revolution?
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What is wrong with my perpetual motion machine model? [closed]
I know that perpetual motion machines are not possible and I want to know the reason why will this machine not work. The Car B has a magnetic bulge on top of it and Car B can only move forward. It c …
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