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Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families (1878)

Johnson, Frank G., 1835- · Chicago, A.H. Andrews · leaf 74

An illustration from Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families, 1878, leaf 74
fixed pulley affords no advantages in power, the conditions of equilib-rium are the same as in the last case; that is, W P : W = 1 : 2, or P = -^, and W = Px 2 ; or, in numbers, 6 : 12 = 1: 2; 2 12or 6 = -r ; and 12 = G X 2.2 68 MATTER, FORCE, MOTION, AND MECHANICS. 78. Figure 36.—A system of…

Physics · Astronomy

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More pictures from Johnson's natural philosophy and key to philosophical charts : illustrated with 500 cuts; being reduced photographic copies of all the diagrams contained in the author's philosophical series of indestructible school charts ; for the use of schools and families

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