Taggart, William Scott · London : George Routledge & Sons, Ltd. · leaf 101
W X ^ = P XJ 16 X i5 = P X 7 -r, 16 X 15 o ,v P = ^ = 3428 lb. Example.—A weight of 23 lb. is hung 6J in. from the fulcrum F inFig. 138. What will be the indications on a spring P whichsupports the arm 15 in. from F? As in the previous ex-amples we have W X jc = P y.y23 X 6o = Px 152.3 x6|- P = 15… … In these examples of levers it will be noticed that the rela-tive positions of the fulcrum, weight, and pressure are different. TEXTILE MECHANICS 91 This has led to the fanciful idea of there being three systems oflevers, but the student will readily see that they are simplyvariations of one…
Textile machinery
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