In $($Figure $1),$ the $3\mathrm{.}1-$in$.-$diameter short rod is made from brittle material having an ultimate strength of $\backslash (\backslash$sigma$\_\{\backslash$text $\{$ult $\}\}=60\backslash$mathrm$\{$ksi$\}\backslash ),$ for both tension and compression. Use a factor of safety of $2$ against rupture.

Part A

Determine if the shaft fails according to the maximum normal stress theory.

$\backslash (\backslash$checkmark $\backslash )$ Correct

Part B

Determine the in$-$plane principal stresses.

Express your answers in kilopounds per square inch to three significant figures separated by a comma.

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