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 36
ameters are to work togetherthe sections of the cones of which they are to be frusta are found in thefollowing manner :—Let A B be the dia-meter of the largewheel and B C thatof the smaller. PlaceA B and B C so asto include the pro-posed angle. BisectA B in D and B C inE. Draw perpen-diculars D F,… … THE PULLEY. 100. The Pulley is a circular disc of wood or iron,grooved on the edge and made to turn on its axis by meansof a cord or rope passing over it. 101. The pulley is merely a modification of the leverwith equal arms, and hence no mechanical advantage isgained by using it—the theory of its…
Physics
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