Animal locomotion, or Walking, swimming, and flying, with a dissertation on aëronautics (1874)
Pettigrew, James Bell, 1834-1908 · New York : D. Appleton & company · leaf 45
L LOCOMOTION. P.AF=:W.BF, and the pressure on the fulcrum is both thepower and resistance, or P+W. In the second order of levers (fig. 2), the resistance is be-tween the fulcrum and the power; and, as before, P : W ::BF : AF, but the pressure of the fulcrum is equal to W—P,or the weight less the… … Fio. 3. In the preceding computations the weight of the leveritself is neglected for the sake of simplicity, but it obviouslyforms a part of the elements under consideration, especiallywith reference to the arms and legs of animals. To include the weight of the lever we have the followingequations…
Animal locomotion · Aeronautics
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