A text book of elementary mechanics, for the use of colleges and schools (1881)
Dana, Edward Salisbury, 1849-1935 · New York, J. Wiley & sons · leaf 216
y noted inthe following figures, 129-134. For all of them thesame equation holds good. The pressure on the fulcrum (the weight of the leverbeing neglected) in Figs. 126 and 129 is P + W, in Fig.127 it is W- P, in Fig. 128 it is P - W, and in theother figures it may be calculated by the… … Fig. 129. Fig. 131. In Fig. 132 the lever is curved like an iron pump-handle, the arms of the weight and power are the per- .*,.*•. A e^k^...* v7f Fig. 132. pendiculars BF and AF respectively, and the aboveequation is true: P.AF= W.BF. 198 STATICS. (187. 187. Three Kinds of Lever. The three forms…
Mechanics
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