Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 67
or instance. (Or try the checker-board with larger spring-balances, if the apparatus of the SecondPart is available.) 58. Pulleys.—We have already learned to consider a diskpivoted at the centre as a kind of lever. When such a leveris worked by means of a cord or band lying upon its cir-cumference,… … Fig. 34. If we fasten two equal weights, Wx and TT2, to the ends of astring and pass the string across the top of the pulley, we shall ofcourse find that they balance each other. THE LEVER. 55 But suppose we used two strings, one for TFi and the other forTT2, fastening each string to a pin or tack…
Physics
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