First Class Lever

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“A Lever of the First Kind is one in which the fulcrum is between the power and the weight... where F represents the fulcrum, P the power, and W the weight.” —Quackenbos 1859




G. P. Quackenbos A.M. A Natural Philosophy: Embracing the Most Recent Discoveries in the Various Branches of Physics, and Exhibiting the Application of Scientific Principles in Every-day Life (New York: D. Appleton and Company, 1859) 94


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