Problem $3(40$ points$)$

The three beams below are loaded the same and have the same support conditions. However, one

has a moment release just to the left of $C,$ the second has a shear release just to the right of $C,$

and the third has an axial release just to the left of $C.$ Which beam has the largest maximum

moment?

First, find support reactions, then plot axial force $(N),$ shear $(V)$ and moment $(M)$ diagrams for all

three beams. Label all critical $N,V,$ and $M$ values and also the distance to points where $N,V,$

and$/$or $M$ is zero.

$($a$)$

$($b$)$

$($c$)$