Elementary natural philosophy : designed for high schools and academies (1881)
Griffin, La Roy F. (La Roy Freese), 1844-1916 · Philadelphia : Sower, Potts & Co. · leaf 55
eel, the load in the barrow for theweight, and the hands for the power.Nutcrackers, lemon-squeezers, andsimilar articles, and a door swung onits hinges by the knob are also levers of this class. 160. The Leyer of the Third Class has the power be-tween the fulcrum and theweight. Thus W F, Fig. 45,is… … ^See Section 100. 46 MECHANICS OF SOLIDS.
Physics
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