Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 33
n, the balance will evi-dently be in equilibrium. If a small additional weight p beadded to the right-hand pan, the balance will swing throughan angle a and take up a new position of equilibrium as inFig. 12. The condition for equilibrium will evidently befound by taking moments of the three… … Fig. 12. Now the sensitiveness of a balance is measured by theangle through which the beam will rotate when a definiteweight, usually one milligram, is added to either pan. Asthe angle practically coincides with its tangent for verysmall angles, the expression deduced for tan a may be takenas a…
Physics · Mechanics
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