Physical laboratory experiments : mechanics, optics and heat (1917)
Goodwin, H. M. (Harry Manley), 1870- · Boston : G. H. Ellis Co., Printers · leaf 35
be made abso-lutely rigid, and, hence, if the above condition be fulfilledfor some one load, it must be further and further departedfrom with increasing load. To determine the effect of thisdeviation from the ideal condition, suppose that the linesjoining the points of support of the pans with the… … PI cos (a + /3) + WV sin a— {P + J))l COS (a — /3) or expanding and solving for tan a we obtain tana = wl „ 2P + P , ^—r • sec )8 !—^ • tan fl (3) If the points of support of the pans are helow the centralknife edge, /3 becomes negative, and for this case tan wl . , 2P4-P , ^ —r . sec /? + !—^ •…
Physics · Mechanics
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