Pulley System

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“A horse without machinery can not lift a weight; but he does it readily with the aid of the simple apparatus shown [here]..” —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) 90


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