Mechanics of engineering. Comprising statics and dynamics of solids: and the mechanics of the materials of constructions, or strength and elasticity of beams, columns, arches, shafts, etc (1888)
Church, Irving P[orter], 1851- [from old catalog] · New York, J. Wiley & sons · leaf 421
ermining the amounts ofthose two forces by the lengths of the correspondingsides. We must.-. begin with a joint where no more than twopieces meet, as at a; [call the joints a, /9, r, d, and the cor-corresponding force polygons a, /3 etc. Fig. 356.] Henceat a (anywhere on the paper) make ah || and =… … Fig. 356. To close the polygon draw through c a || to the pieceCD, and through a a || to AD; their intersection deter-mines d, and the polygon is closed. Since the arrowsmust be point to butt round the periphery, the force withwhich the piece CD acts on the pin of the joint a is aforce of an amount…
Mechanics, Applied · Engineering · Strength of materials
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