Nystrom, John W. (John William), 1824-1885 · Philadelphia, J.B. Lippincott · leaf 163
H§£ iv^t Pullets.—A single fixed Pulley.F: W=R: R, or F = W,v = vf. 169. A single moveable Pulley. F: W= R: 2R, or F=IW, If the force .Fbeing applied at a and act upwards,the result will be the same. v - 2v.
Mechanical engineering · Engineering
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