Physics - Elasticity Question with Solution | TestHub

A steel rod with $y=2.0\times 10^{11}\text{N}{m}^{-2}$ and $\alpha =10^{-5}{\left(\_{}^{\circ }\mathrm{C}\right)}^{-1}$ of length $4m$ and area of cross-section $10{\left(cm\right)}^2$ is heated from $0^{\circ }\mathrm{C}$ to $400^{\circ }\mathrm{C}$ without being allowed to extend. The tension produced in the rod is $x\times 10^5\text{N}$ where the value of $x$ is \text{_________} .