A thin$-$walled cylinder with open ends is subjected to constant torque of $\backslash (150,000\backslash$mathrm$\{$lb$\}\backslash )-$in$.$ The cylinder is made of $2024-$T$3$ Aluminum with a yield strength $\backslash (\backslash$mathrm$\{$Y$\}=50\backslash$mathrm$\{$ksi$\}\backslash ).$ The cylinder has a mean radius $\backslash ($ r$=5\backslash )$ in and a wall thickness of $0\mathrm{.}05$ inches. While holding the torque constant, an internal pressure $\text{'}\backslash ($ p$\_\{0\}^\{\backslash$prime$\}\backslash )\text{'}$ is increased from zero until the cylinder begins to yield. What is the internal pressure at onset of yielding based on Tresca criteria?

Note : For thin walled cylinders, polar moment of inertia