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A Buoyancy-Driven Perpetual Motion Machine
The American Mathematical Monthly
Vol. 120, No. 6 (June–July 2013), pp. 564-566
Published by: Mathematical Association of America
Stable URL: http://www.jstor.org/stable/10.4169/amer.math.monthly.120.06.564
Page Count: 3
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Abstract A perpetual motion machine driven by buoyancy is presented. We see that it does not quite work, and we also discuss how it would move in reality. Debunking the trick behind most such machines is a nice exercise in exact and non-exact differentials.
Copyright the Mathematical Association of America 2013