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)
MECHANICAL POWERS. Go By this device space and time are conveniently exchanged (or power.Differential pnlleys, Avorked by an endless chain, are arranged on thesame principle. 74 Figure 32.—Compound wheel and axle.—In the figuresuppose tiie small circles (the axlus) to be cog-wheels, working… … diameters to be three simple levers of the same dimensions of that inFig. 29 (71); then it will be seen that the conditions of equilibriumare the same as those of the compound lever, Fig. 27 (69) : Product wheel radii X P. = product axle radii X W. Or,8X8X8X6 = 2X2X2X 38-4. Or (beginning next to…
Physics · Astronomy
Internet Archive · University of Connecticut Library · Public Domain Mark 1.0. Free to use for anything.
