$\frac{?}{\text{b}\text{a}\text{r}}({}_x),{}_{xy},{}_{xz}=?$

problem $5(20pts),$ Version A

The bar has a square cross$-$section with $a=1$ in$.$ and $d=0\mathrm{.}5in.$ and is rigidly fixed to the wall at $B.$ Forces $P_x=201lb,P_y=81$ b $,$ and $P_z=41b$ are centrally applied to the tip of the bar. Determine the state of stress at point $A$ on the $yz-$plane in the bar. Show the results on a volume element below.