B M Sharma Solutions for Chapter: Thermometry, Thermal Expansion and Calorimetry, Exercise 1: ILLUSTRATION

A rod has length $2 \mathrm{m}$ at a temperature of $20°\mathrm{C}$. Find the free expansion of the rod, if the temperature is increased to $50°\mathrm{C}$, then find stress produced when the rod is fully prevented to expand. $Y=2\times {10}^{11} {\mathrm{Nm}}^{-2}; \alpha =15\times {10}^{-6}/{}^{\circ }\mathrm{C}$

A rod has length $2 \mathrm{m}$ at a temperature of $20°\mathrm{C}$. Find the free expansion of the rod, if the temperature is increased to $50°\mathrm{C}$, then find stress produced when the rod is permitted to expand by $0.4 \mathrm{mm}$. $Y=2\times {10}^{11} {\mathrm{Nm}}^{-2}; \alpha =15\times {10}^{-6}/{}^{\circ }\mathrm{C}$