International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 492
= 0. II. The algebraic sum of all horizontal forces = 0. III. The algebraic sum of the moments of all forcesabout any point = 0. Since the loads act downwards and the reactions upwards,the first condition states that the sum of all the loads mustequal the sum of the reactions of the supports.… … Scale 1^160 lb- Fig. 223, on the beam at distances from the left support equal to 2, 5, 8, 10, and12^ feet, respectively. Required the reactions of the supports, neg-lecting the weight of the beam. See Fig. 223. STRENGTH OF MATERIALS. 481 Solution.—The reactions may be found graphically by…
Railroad engineering
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