Merchant, F. W. (Francis Walter), 1855-1937, Chant, Clarence Augustus, 1865-1956 · Toronto : Copp Clark · leaf 71
y speaking, they are not absolutely parallel.But the angles between them are so very small that weusually speak of the weights of the various particles as a setof parallel forces. Tliese forces have a single resultant, as can be seen in thefollowing way. Consider two forces i^^, F.^, acting a^t… … Fio. fl2.—The weight ofa body acts at its centreof gravity. Continuing in this way, we at last come to the resultant ofall, acting at some definite point. The sum of all these forces is the weight of the body, andthe point G where the weight acts is called tJte centre ofGRAVITY of the body. If the…
Physics
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