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Notes and exercises in natural philosophy : including statics, hydrostatics, pneumatics, dynamics and hydrodynamics : designed for the use of normal and grammar schools, and the higher classes in common schools (1860)

Sangster, John Herbert, 1831-1904 · Montreal : J. Lovell · leaf 29

An illustration from Notes and exercises in natural philosophy : including statics, hydrostatics, pneumatics, dynamics and hydrodynamics : designed for the use of normal and grammar schools, and the higher classes in common schools, 1860, leaf 29
t., the weightis 700 lbs. Eequired the power ? jl7is. 12|f. 26. In a compound lever the arms of the weight are 11, 13, and.9 ft., the arms of the power are 4, 1, and 2 ft., the weight is560 lbs. What is the power ? ^ ^«s. 12870 lbs. THE WHEEL AND AXLE. 82. The vvlieel and axle consists of a wheel… … 83. The wheel and axle is merelya modification ofthe lever with un-equal arms; the radius of the wheelcorresponding to the arm of thepower and the radius of the axleto the arm of the weight. 84. The wheel and axle is sometimes called the con-tinual or perpetual lever, because the power acts…

Physics

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