I. The Croonian lecture. —On some elementary principles in animal mechanics. No. IX. The relation between the maximum work done, the time of lifting, and the weights lifted by the arms

Abstract

In the preceding note (No. VIII) I have shown that, in lifting weights at a fixed rate with the arms, until fatigue sets in, the following equation, deduced from the law of fatigue, is complied with, very, closely:— n (1 + β 2 t 2 )/ t = A . . (1) where n =number of lifts, t =time of each lift, β } coefficients to be found from A} the experiments themselves. From this equation, and from the experiments themselves it appeared that there was a particular time of lift t =τ, at which the maximum work was done, and that, τ=1/ β . . (2).