Maurer, Edward R. (Edward Rose), b. 1869 · New York : John Wiley & sons, inc.; [etc., etc.] · leaf 56
rces. Toillustrate we take the beam shown in Figs. 56 and 57 and determine thereactions. First, the force polygon should be drawn as far as possible,the knowns represented first, thus AB, BC, and CD (Fig. 58) representingthe 2000, the 1000, and 3000 pound forces respectively; then the lines… … Fig. S7 Fig. 58 Fig. 59 polygon for all must close. It remains now to locate E; this can be done bymeans of the string polygon. (At this point it may be well for the readerto recall the significance of the strings of a string polygon; see Art. 6.)The polygon may be started at any point on any of…
Mechanics
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