The elements of natural and experimental philosophy .. (1834)
Phillips, R. (Richard), Sir, 1767-1840, Smith, E. A · New York, M'Elrath, Bangs & Herbert · leaf 61
58 MECHANICS. Pis?. 18. … Illus. If the diameter of thewheel, Fig. 18, or the length ofthe spoke, Fig. 19, be four feet,and the diameter of the axis only8 inches, then the power P, of onehundred pounds, or the strengthof a man applied to the spokes S,equivalent to a hundred pounds,will balance a weight W of sixV hundred…
Physics
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