Gage, Alfred P. (Alfred Payson), 1836-1903 · Boston, London, Ginn · leaf 115
(pounds) X 2(feet) = 4 foot-pounds of work done on r. Again, 1 + (pounds) X 4 (feet)= a little more than 4 foot-pounds of work (or energy) expended. It thus seems that, although a machine will enable a smallforce to balance a large force, when work is performed thework applied to the machine is… … Fig. 59. USE OF MACHINES. 99 resistances. So that by the emjployment of a machine nothingis gained in work, but something is always lost. What, then, is the advantage gained in using this machine ?Suppose that r is 400 pounds, and that the utmost force thata man can exert is a little more than 200…
Physics
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