A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 262
. Wedge. 233. The Wedge in its simplest form is a five-sidedsolid, of which two adjacent sides meeting in the edgeare rectangles, the two opposite ends are triangles, andthe back is a rectangle. The power is supposed to actin a direction perpendicular to the back, and, assumingthe surfaces in… … Fig. 181. wedge; then, if the three forces P, Q, R hold th§ wedgein equilibrium, their lines of direction will, if produced,all meet at some point 0. Also, since these forces areby supposition at right angles to the sides of the triangle 244 STATICS. [235. ABC, these sides will be respectively…
Mechanics
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-215-23.webp)
