Two arrangements of pulley: crossed belt and uncrossed belt. The pulleys are constructed with two circles that have the radii labeled and tangent lines drawn (strings).
Keywordscircles, wrap, curve, drums, velocity, tangent, circular, radii, Parallel, connected, pulleys, tangent lines
GalleriesGeneral Geometric Illustrations
Encyclopaedia Britannica (New York: The Encyclopaedia Britannica Company, 1910) 17:1004