Laboratory exercises in physics for secondary schools (1906)
Twiss, George Ransom, b. 1863 · Chicago, Scott, Foresman and company · leaf 77
he bar as in Fig. 12. Whatshould be the magnitude of the equilibrant E of thetwo downward forces [i.e. of W applied at a andthe weight Wt of the bar applied at G) ? (c) Measure a h. Write down the equation forthe equilibrium of the moments with respect to anaxis at I: thus, - WX a I + E Xch - Wx X… … 56 LABORATORY EXERCISES IN PHYSICS quantities, and solve for c b. Now measure c bwith a rule, and E with a spring balance, and seehow nearly correct your calculation was. (d) Make a similar case, but with one or moreother weights W^ TP^, etc. hung at any otherpoints on the bar; and, leaving E and c…
Physics
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