A system of natural philosophy, designed for the use of schools and academies (1845)
Moffat, J[ohn] M. [from old catalog] · Philadelphia, E. C. Biddle · leaf 36
COMPOSITION OF FORCES. 33 … 42. It may be demonstrat-ed by means of the parallelo-gram of forces, that fromthree forces acting- in theF directions A B, A C, and AD, in the proportions of thelength, breadth and depth ofa parallelopiped,* will resulta motion in the diagonal A F of that parallelopiped; for A B andA C compose A E…
Physics
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