Appleton's dictionary of machines, mechanics, engine-work, and engineering : illustrated with four thousand engravings on wood ; in two volumes (1873)
D. Appleton and Company · New York : D. Appleton and Co. · leaf 689
ram, and draw itsdiagonal. We may form a polygon SI P, Q R P, whose sides SI P„ P, Q, Q R, R P, are parallel andequal to the given components P] Pa P3 P4, the last side SI P completing the polygon will be the meanforce sought, or rather its measure. This simple and elegant theorem is called the…
Mechanical engineering · Mechanics · Engineering
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