Double Wedge

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“Two wedges have been placed toward one another underneath the weight. Equal force is applied to each wedge which raises the weight.” —Quackenbos 1859

Galleries

Wedges

Source

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) 112

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