Part C $-$ Maximum applicable axial force $P$

Using the information obtained about the stress$-$concentration factors in the member, determine the maximum applicable axial force $P$ that can be applied to the member.

Express the maximum applicable axial force in kips to three significant figures.

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Part D $-$ Maximum applicable axial force $P$ without the circular cutout

Express the maximum applicable axial force in kips to three significant figures.

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The member shown below is made of steel $({}_{\text{a}\text{l}\text{l}\text{o}\text{w}}=20\mathrm{.}0$ksi$)$ that is $3\mathrm{.}25$ in thick. The member is subjected to an axial force $P$ that is applied at both ends. Let $r=0\mathrm{.}75$ in$,w=4$ in$,h=2\mathrm{.}5$ in $,$ and $d=0\mathrm{.}5$ in

Part A $-$ Stress$-$concentration factor due to a circular cutout

Determine the stress$-$concentration factor $K$ due to the $0\mathrm{.}5-$in$.-$diameter circular cutout in the member.

Express the stress$-$concentration factor to three significant figures.