﻿22 Prof. L. N. G. Filon : Investigation of Stresses 

 Such points are given approximately by the equation 

 2W 2W G F 3M^_ 



or putting in numerical values 



y__ -3857W /M ^ 



b " W/M o -'550O V ; 



The method adopted for testing this formula was to let the 

 bending moment M remain constant and to gradually increase 

 W, observing the y of the point where the band crossed the 

 central vertical. M was negative throughout (i. e, it tended 

 to produce bending in the opposite sense to W). y was 

 therefore also negative. 



The observations were repeated with three different values 

 of i, namely, 30°, 45°, and 60°. It was verified that the 

 point of crossing of the band was independent of i within 

 the error of observation. The mean of the three readings 

 was then adopted as being the true one. 



Fig-. 10. 



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05 -10 15 20 -25 -30 -35 W 45 -50 -55 60 -65 -70 -75 -80 -85 -90 -95 



U/ILUES Of (-W/M ) TH£ORET/CfiL C(J/?Y£. 



-—©---@— OBSEftl//)r/OHS 



The results are shown in fig. 10, the full curve showing 

 the theoretical values calculated from (23), and the dotted 



