Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 186
.s forming a sys- parallel to Pj or from the end of Pl tem of iorces in equilibrium, we could de- the line Pj Rl2 equal and parallel ta compose R34 into two components by sim- P2, in either case we obtain the same ply assuming any point as P3 [Fig. 3 (b)] resultant and the same direction for and… … of the forces, or, what amounts to the Fig.3 (c)the same forces in the order P3P2Pt: same thing, taking the direction of the P5 P4, and obtain precisely the same resul- components P3 P4, opposed to the direc- tant, in the same direction as before. For,, tion of R3^ for equilibrium, we obtain the…
Engineering
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