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 235
xis; the larger iscalled the wheel, and the smaller the axle. The poweris applied to the end of the rope wound about the wheel,and the weight is raised by a rope wound upon the axle.This is seen in Fig. 146. 216 STATICS. [203. 203. Suppose the power and weight to act in the sameplane perpendicular… … Fia 146. Fig. 147. ments of P and W about the axis must be equal to zero. That is, P.AF = W.BF. If AF = R, and BF = r, then PW R> or- The Poiver is to the Weight as the radius of the axle isto the radius of the wheel. 204. Since the power, if applied by a rope as here,must always act at right…
Mechanics
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