Problem $5$

A cantilever beam with a cross$-$section shown below and a length $L=10m$ is loaded by a skew load $P=$

$200$ N at the tip.

a$)$ Calculate and plot a graph of the stress at point $A$ as a function of the angle $$

b$)$ Calculate and plot a graph of the angle $,$ which locates the neutral axis $n-n,$ as a function of

angle $.$ Let $$ vary from $1$ to $10$ degrees