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Natural philosophy. including statics, hydrostatics, pneumatics, dynamics, hydrodynamics, the general theory of undulations, the science of sound, the mechanical theory of music, etc. : designed for the use of normal and grammar schools, and the higher classes in common schools (1861)

Sangster, John Herbert, 1831-1904 · Montreal : J. Lovell · leaf 31

An illustration from Natural philosophy. including statics, hydrostatics, pneumatics, dynamics, hydrodynamics, the general theory of undulations, the science of sound, the mechanical theory of music, etc. : designed for the use of normal and grammar schools, and the higher classes in common schools, 1861, leaf 31
yshortened only by the differencesbetween the circumferences of theaxles; and the distance throughwhich the weight is raised is equalto half the shortening of the rope.The effect is therefore the sameas if an axle had been used witha radius equal to half the differencebetween the radii of the… … ThenP: W: : Id : R. Whence P — Wy.\dR PxR Wx\d ^^ PxR—p—, and d = -j^. Example 36.—In a differential wheel and axle the radius ofthe larger axle is 4^ inches, the radius of the smaller axle is 4^inches, the radius of the wheel is 70 inches. What power willbalance a weight of 1000 lbs. SOLniOH. Here…

Physics

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