International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 483
used to find the resultant of several forces having acommon point of application, or whose lines of actionpassed through a common point. A method of finding theresultant will now be given when the forces lie, or may beconsidered as lying, in the same plane, but their lines ofaction do not pass… … Scale 1=80 lb. Fig. 215. the arrow-heads. Construct the polygon of forces 0 12 3 0as shown at (<•/), in the same manner as described inArt. 878, O 3 representing the direction and magnitude ofthe resultant. Everything is now known except the line on 472 STRENGTH OF MATERIALS. which the point of…
Railroad engineering
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