A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 169
is shown the outline of a thin plateto which forces Pl5 P2, P3, etc., are applied at points A, B, C, etc.,respectively. The forces are all in the plane of the plate and aregiven in equilibrium. It will be noted that the equilibrium of theforces is independent of the shape of the plate ; hence any… … Fid. 160.—Substitution of a ri^id frame for a body. by removing the plate and substituting an arrangement of bars(shown dotted in Fig. 166 (a)) connected together at A, B, C, etc.,by means of hinges or pins ; the result will be the same, viz. thegiven forces balance and the frame formed by the bars…
Physics
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