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
159. Applications. … Fig. ii. A man raising a stone, Fig. 44, usesa lever of the second class. Thewheelbarrow has the fulcrum at thewheel, 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…
Physics
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
