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 114
ow nearly straightit is for comparatively small values of x. EXPT. 15. -Polygon of forces. In Fig. 07 is shown the finished resultsof an experiment on the polygon of forces. The apparatus and methodare similar to that employed in Expt. 13 (p. 86). Four forces have beenassumed, and the equilibrant… … Fig. 96.—Graph of P and x fora pendulum. FIG. 97.—An experiment on the polygon offorces. Expt. 18.—Derrick crane. A derrick crane model is shown in Fig. 98,consisting of a post AB firmly fixed to a base board which is screwed to atable ; a jib AC has a pointed end at A bearing in a cup recess, a…
Physics
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