Combined Loading on an L-shaped beam

[morpheus343]

In order to find the bending moment at each point

 

[erobz]

In order to find the bending moment at each point

Yes, the moment at section $a-b$ and $c-d$ are defined by $M(x)$ which is a function of $F_x, F_y$.

Before you were applying the same moment at point $b$ and $d$. But they are $10 ~ \rm{cm}$ apart. So they don't have the same internal moment.

You have two other points to consider, so maybe you can even solve for $L$, I don't know...You'll have to try that out.

To me it appears as though section $a-b$ is at $\frac{L}{2}$ but that isn't specified anywhere - I'm skeptical, but who knows.

Also, it’s not clear whether or not the height of the I beam ( $20 \rm{cm}$ )is to be neglected against $L$, that would factor into your external moment.

 

[morpheus343]

I see, i will work the algebra and see if i can solve it, but i think there are too many unknowns.($F_x$, $F_y$, $M_B$, $L$, $x$ distance). And i only have 4 equations, one of each of the combined stress at each point. Thank you for your time and help