Mechanical Properties of Solids

Related Questions

• The units of Young ‘s modulus of elasticity are

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• A wire of length 2 m is made from $10\ c{{m}^{3}}$ of copper. A force F is applied so that its length increases by 2 mm. Another wire of length 8 m is made from the same volume of copper. If the force F is applied to it, its length will increase by

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• 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 $Y=2\times {{10}^{11}}\,N/{{m}^{2}}$

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• Longitudinal stress of $1\,kg/m{{m}^{2}}$ is applied on a wire. The percentage increase in length is $(Y={{10}^{11}}\,N/{{m}^{2}})$

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• When a 4 kg mass is hung vertically on a light spring that obeys Hooke's law, the spring stretches by 2 cms. The work required to be done by an external agent in stretching this spring by 5 cms will be $(g=9.8\,metres/sec^{2})$

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