Gilley, Frank M · Boston, Allyn & Bacon · leaf 113
d Pulley. — The axles of the car used in Exercise16, page 109, answer well as pulleys, and have almost no fric-tion. Screw or clampa car. A, to a block,and fasten the blockto a table (as in Fig.111). For the weight,W, use another carwith a load, whichmay be tied in. Raisethe car, and read… … MACHINES. — PULLEYS. 103 balance shows that the force exerted is that which is to beused in the experiment. If the lower balance reads the sameas the upper, there is no error; if not, the amount of the dif-ference should be used in correcting the readings. (See exer-cise on errors in a spring…
Physics
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