Physics - Elasticity Question with Solution | TestHub

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