International Correspondence Schools · Scranton, Pa. : The Colliery engineer co. · leaf 347
equilibrium. 921. A body is in neutral equilibrium when it hasno tendency to move either way, in the direction of its mo-tion, after being slightly displaced. For example, a sphere of uniform density ; a cone restingon its side. 922. A vertical line drawn through the center of gravityof a body is… … Let A C B, Fig. 133, be a cylinder whose base is obliqueB B to the center line B O D ; and let Obe the center ofgravity of this cyl-inder. So long as the perpendicular through O falls be- FiG- 133. between A and C, the cylinder will stand, but the instant that it falls without the base, the…
Railroad engineering
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