. The elements of railroad engineering . 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 center of gravity of any regular plane figure is thesame as the geometrical center. 915. To find the center of gravity of any irregularplane figure, but of uniform thickness throughout, divideone of the parallel surfaces into triangles, parallelograms,circles, elli

---

. The elements of railroad engineering . 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 center of gravity of any regular plane figure is thesame as the geometrical center. 915. To find the center of gravity of any irregularplane figure, but of uniform thickness throughout, divideone of the parallel surfaces into triangles, parallelograms,circles, ellipses, etc., according to the shape of the figure ;find the area and center of gravity of each part separately,and combine the centers of gravity thus found, as in thecase of more than two bodies whose weights were known,except that the area of each part is used instead of theirweights. See Fig. 131. 916. Center of Gravity of a Solid.—In a body freeto move, the center of gravity will lie in a vertical plumb

---

Size: 1740px × 1436px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1800, bookdecade1890, booksubjectrailroadengineering