Mechanical advantage: The power of the lever, 1877. Lever of the second kind where effort is between the fulcrum and load. Resistance, A, is between power, B, and fulcrum, C. The use of a lever allows more power to be exerted for the same effort than is possible without it. From Natural Philosophy by A Ganot. (London, 1877). (Photo by Oxford Science Archive/Print Collector/Getty Images)
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January 27th, 2021
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