$6-$ A solid circular aluminum bar with a diameter of $2$ inches is fixed to the wall and is oriented

in a horizontal plane. A vertical load of $P=500lb$ is applied at the end of the bar, point A$.$

Calculate the deflection of point A under this load.

$E=10{10}^6,$ Poisson's Ratio $=0\mathrm{.}35,$ Length $AB=BC=CD=2$ feet