Categories > Mechanical Properties of Solids > Young’s Modulus > A wire of cross-sectional area $3\,m{{m}^{2}}$ is first stretched between two fixed points at a temperature of $20°C$. Determine the tension when the temperature falls to $10°C$. Coefficient of linear expansion $\alpha ={{10}^{-5}}{}^\circ {{C}^{-1}}$ and $Y=2\times {{10}^{11}}\,N/{{m}^{2}}$

Mechanical Properties of Solids

Question: A wire of cross-sectional area $3\,m{{m}^{2}}$ is first stretched between two fixed points at a temperature of $20°C$. Determine the tension when the temperature falls to $10°C$. Coefficient of linear expansion $\alpha ={{10}^{-5}}{}^\circ {{C}^{-1}}$ and $Y=2\times {{10}^{11}}\,N/{{m}^{2}}$


1) $20 N$
2) $30 N$
3) $60 N$
4) $120 N$
Solution: Explanation: No Explanation
Young’s Modulus Breaking Stress

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