Week $10$ Assignment

The cantilever beam AB will be installed so that the $60-mm$ side forms an angle $$ between $0$ and $90$ with the vertical.

Knowing that the $600-N$ vertical force is applied at the center of the free end of the beam, determine the normal stress at point a when $($a$)=0,($b$)=90.($c$)$ Also, determine the value of $$ for which the normal stress at point $a$ is a maximum and the corresponding value of that stress.