Name:

CCE $203-$HW $1\mathrm{.}8-1\mathrm{.}10$

Date:

$3.$ A very old steel pole vault pole has been examined by material scientists studying properties of steel. According to the oldest

Olympic pole$-$vault coach alive, the pole was required to support a tensile force of $3k$ in order to be effective. The wall thickness of the pole is $0\mathrm{.}1$ in$.$

a$)$ Find the minimum required outer diameter if the allowable tensile stress when someone vaulted was $12,000$ psi? $($Round to $3$ decimal places$)$

Outer $=d{d}_{\text{m}\text{i}\text{n}}=$ in$.$

inner $=d-2t$