150 



EQUATIONS FOR VARIOUS BEAMS. 



Art. 90. 



Fig. 106. 



When 1 9 = 7, 



M =r?<* for AC one* ft f x -+ w(x-l*) for CO 

 M mff]( -i W(l, +i 4; for *=2,+j> 1 2 = j' L 



- - wlf or f? f -wl, 



M --iwx 



= - i wx*+r?, (x-2,) for AB 



Fig. 107. 



M - O for*=' *V%!+ *'l, ( Fbtnfs of contra -f/exvre) 

 When l f = 2 3 f?,=r?.,=wL 



M c?f center = o when l f =/ 2 Z =^Z. 

 =M A =M e when l t = O2O7L 



