Van Nostrand's eclectic engineering magazine (1869)
[New York : D. Van Nostrand] · leaf 307
281 THE NEW METHOD OF "GRAPHICAL STATICS." close. There is one exception to this equilibrium. If the equilibrium poly- statement. Since the pole may be taken gon however does not close, the forces anywhere, suppose it taken somewhere cannot be replaced by a single force but only by a couple. The… … Then choose a pole C and draw S0^, and upon the line closing the force polygon. thus obtain the corresponding equilibrium This line, as we know, is the resultant, and holds the other forces in equilibrium. polygon S0 a b c dS4 Fig. 14 (b). Choose A' \ now a second pole C. Draw SV* and But now the…
Engineering
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