A $21-$mm$-$diameter by $3\mathrm{.}8-$m$-$long steel rod $(1)$ is stress free after being attached to rigid supports, as shown. At A$,$ a $16-$mm$-$diameter bolt is used to connect the rod to the support. Determine the normal stress $$ in steel rod $(1)$ and the shear stress $$ in bolt A after the temperature drops $67C.$ Use $E=233$GPa and $=13\mathrm{.}1\frac{{10}^{-6}}{}C.$

Answers:

$=\frac{\text{M}\text{P}\text{a}\text{.}}{?}$

$T=MP{a}^2$