The T$-$section cantilever beam shown in Fig. $3$ is subjected to the loading shown in the figure. Axes

y and z are the centroidal axes of the section.

a$)$ Determine the internal forces N$,$ V$,$ M at section a$-$a$.(8$ points$)$

b$)$ With the internal forces found in part a$),$ determine the state of stress at point A $($bottom of web$).$ Draw your results on an element located at this point. $(6$ points$)$

c$)$ With the internal forces found in part a$),$ determine the state of stress at point B $($top of web$).$ Draw your results on an element located at this point. $(6$ points$)$