Problem $3(40$ pts$).$ Consider the combined loading problem shown below. There are two external forces at point B in their corresponding directions that act on the cantilevered beam fixed at A and D $.$ The cross$-$sectional area of the square beam is $0\mathrm{.}25m^2($therefore the base and height of the square is: $0\mathrm{.}5$ mx $0\mathrm{.}5$ m $).$ Show the $($a$)$ the Normal $($N$),$ Shear $($V$),$ and Moment $($M$)$ diagrams for the whole beam. Second, $($b$)$ calculate the combined stress state at point A$.$ Finally, $($c$)$ calculate the combined stress state at point C$.$ Notice where the locations are for point A and C on the beam. What is their $(x,y)$ coordinate? $($Hint: $1$ CUT!$)$

Bonus: Show the combined stress state for both Point A and Point C on a square or cube.