Hall, Edwin Herbert, 1855-1938 · New York, H. Holt and company · leaf 72
8. We can see at once that if the pulley B werelifted one inch while P remained stationary there would be fourinches of loose string under B. To make the string taut again, Pwould have to rise four inches. In actual use P and B rise at thesame time, P moving four times as fast as B, TEE LEVER 59… … Fig. 39. If the weight of the rider, 150 lbs., rests entirely upon the pedalshown, in its present position, how great a weight acting in opposi-tion, as in the figure, will just neutralize the driving-power ? The circumference of the circle described by the pedal is (see Ex.B) 2ft X 6 inches, or…
Physics
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