International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 486
hc\ the intersection of <r/;, parallel to PO, andg h, parallel to P5, gives a point //, on the resultant R. Through h,draw R parallel to O 5, and it will be the position of the line of action 474 STRENGTH OF MATERIALS. of the resultant of the five forces. The components must pass throughthe… … Fig. 218. 216 (they, of course, coincide with c h and g //, since the same pole P isused), intersecting F, and V-i in k and /. Join k and /, and draw P Qparallel to k l. Then, O Q= F,, and (9 5 = V^. COMPOSITION OF MOMENTS. 11 29. In Art. 906 it was stated that the moment of aforce about a point is…
Railroad engineering
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