- #1
kgreen
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Could somebody please explain this excerpt to me from Feynman's Lectures on Physics on perpetual motion? I don't completely understand his definition of perpetual motion. Thanks!
"We must be careful to define perpetual motion...If, when we have lifted and lowered a lot of weights and restored the machine to the original condition, we find that the net result is to have lifted a weight, then we have a perpetual motion machine because we can use that lifted weight to run something else."
"We must be careful to define perpetual motion...If, when we have lifted and lowered a lot of weights and restored the machine to the original condition, we find that the net result is to have lifted a weight, then we have a perpetual motion machine because we can use that lifted weight to run something else."