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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 51

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 51
44 MATTER, FORCE, MOTION, AND MECHANICS. distance that the centre of gravity, or the weight of the body, must beelevated in order to overturn the block. ^^. Figure 9. Fig. 9. … Relative stability of cubes and pyra-mids.—Let the altitude and base ofthe pyramid be the same as those ofthe above cube, with the centre ofgravity indicated by a dot, which is atone-third of the distance from the baseto the apex. The space L, it will beseen, between the two dotted lines, ismuch…

Physics · Astronomy

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