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The Artisan, or, Mechanic's instructor : containing a popular, comprehensive and systematic view of the following sciences ... also biographical notices of eminent scientific men, enriched by portraits : with many interesting and valuable articles relating to the mechanical and useful arts : the whole intended as a companion to the institutes (1825)

Carey, George G · London : Printed for William Cole · leaf 131

An illustration from The Artisan, or, Mechanic's instructor : containing a popular, comprehensive and systematic view of the following sciences ... also biographical notices of eminent scientific men, enriched by portraits : with many interesting and valuable articles relating to the mechanical and useful arts : the whole intended as a companion to the institutes, 1825, leaf 131
an equilibrium in the single fixed pulley when PROPOSITION XXV. the power and weight are equal. Theorem. — If two triangles have two sides Let a power and weight P, W, equal to of the one equal to two sides of the other , each other, act by means of a perfectly each to each , but the base of the… … then whatever force is exerted at D, in the direction DAP, by the power, an equal force is exerted by the weight in the direc- tion D B W ; these forces will, therefore, keep each other in equilibrio. This proposition is true in whatever direction the power is applied ; the only For, if it be not…

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Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.

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