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 251
Fig. 166. Fig. 167. 225. The Pulley on the Principle of Work. 1. SingleFixed Pulley. Here (Fig. 168) the power and weightact through equal distances; that is, s = % and there-fore W = P. 2. tfm^rfe Movable Pulley with Parallel Strings. In 232 STATICS. [175. this case (Figs. 169, 170) the distance… … Fig. 169. Fig. 170. 3. Single Movable Pulley with Strings not ParallelThe effective component of the power is P cos a (Fig.171), and since s = 2A, as above, W = 2P cos a. 4. ifyrstf #z/s^w of Pulleys. Suppose that the weight(Fig. 172) is raised through aheight //, the wheel D is evidentlyraised %h\…
Mechanics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
