International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 344
Fig. 131. It is also true that the distance D 0 = ^ D A^ and that ELEMENTARY MECHANICS. ^33 F O ^= ^ F C, and the center of gravity could have beenfound by drawing from any vertex a line to the middlepoint of the opposite side, and measuring back from thatside ^ of the length of the line. The…
Railroad engineering
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