The area of cross-section of a railway track is 0.01 m^2. The temperature variation is 10^° C. Coefficient of linear expansion of material of track…

The area of cross-section of a railway track is $\displaystyle 0.01 \mathrm{~m}^2$. The temperature variation is $\displaystyle 10^{\circ} \mathrm{C}$. Coefficient of linear expansion of material of track is $\displaystyle 10^{-5} /{ }^{\circ} \mathrm{C}$. The energy stored per meter in the track is \_\_\_\_ J/m. (Young's modulus of material of track is $\displaystyle 10^{11} \mathrm{Nm}^{-2}$ )