Physics - Elasticity Question with Solution | TestHub

A $1000\mathrm{mm}$ rod ($\alpha =10^{-4}$ per degree, $Y=10^{11}\mathrm{Pa}$) is placed symmetrically between fixed walls $1001\mathrm{mm}$ apart. Temperature rises by $20^{\circ }\mathrm{C}$. Stress in $N/{\mathrm{m}}^2$ is: