
Er, _t1j8, gu vog 64 (6—1) E 
Be 20 re 11975 8 ce! 753° he oi + ' 
16 128 64 
Hansa o +2(1+)(0 a oda ) Jo 
I 
el 

9.7.5 
The conditions of minimum gives us the equations ž 
Ta (PR a9(S-%)- 
a uab a(og ac] Io 




4 u, 
po or uolen 
| From (4) we can find = corresponding to the given value of 
ac From the table below *) we see 
1 




= ac= 6 6,5 7 07.) 
I 
= | 439 | 874 | 720 | » 





m = |'0,0363 | 0,0317 | 0,029| — 


1.0022 1:0.019 1.0017. = 









2 q= | 0,019 | 0,020 | 0,020 | — 


that the variation of ac is small in comparison with that of ZZ 
1 The quantity « and a, substituted in (3) and equalizing V to the 
E work ” done by the bending force, we get the deflexion in the form. 3 
we 0 Wi. WEL AWE 
| ee Auer, 0) 
where 
12 2+90 
nd We 
*) By calculating s is ni equal to 1. m 

pe miro: a ha E u 2a m Mis 
