A text book of physics, for the use of students of science and engineering (1918)
Duncan, John, d. 1941, Starling, Sydney George, 1873- · London Macmillan · leaf 219
lb. weight be applied to D at a distanceR inches from the axis of the screw, and let Pact horizontally at right angles to the bar. Letthe pitch of the screw be p inches. Then, if thescrew makes one revolution. Work done by P =P x 2ttR inch-lb.Work done on W -=W x p inch-lb.Assuming that there is no… … FIG. 226.—Screw-jack. ■R p For experimental purposes the bar D is removed, and a pulley havinga grooved rim takes its place. A cord is wound round the rim of thepulley, passes over another fixed pulley and lias a scale-pan at its free xrv EXERCISES 195 end. Make a series of experiments with a…
Physics
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