Bartlett, W. H. C. (William Holms Chambers), 1804-1893 · New York : Barnes · leaf 119
-marked, that this component Fi&- 4r3-is nothing more nor lessthan the projection of theforce on the direction ofthe motion. Accordingly,let us consider two forces,P and Q, applied to thepoint A, R their resultant,and a A the small path de-scribed by the point of ap-plication. Let fall from the… … when theprojections ofcomponents fall MECHANICS OF SOLIDS. 115 Now, AR = AP — RP, but A Q and R P, being equal and parallel, their projec-tions A Q and R P upon the same line, are equal, andhence AR = AP aq; and multiplying both members by the path A a, we have work ofresultant equal todifference…
Mechanics · Acoustics · Optics
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