Categories > Mechanical Properties of Solids > Work Done in Stretching a Wire > The length of a rod is $20 cm$ and area of cross-section $2\,c{{m}^{2}}$. The Young's modulus of the material of wire is $1.4\times {{10}^{11}}\,N/{{m}^{2}}$. If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be

Mechanical Properties of Solids

Question: The length of a rod is $20 cm$ and area of cross-section $2\,c{{m}^{2}}$. The Young's modulus of the material of wire is $1.4\times {{10}^{11}}\,N/{{m}^{2}}$. If the rod is compressed by 5 kg-wt along its length, then increase in the energy of the rod in joules will be


1) $8.57\times {{10}^{-6}}$
2) $22.5\times {{10}^{-4}}$
3) $9.8\times {{10}^{-5}}$
4) $45.0\times {{10}^{-5}}$
Solution: Explanation: No Explanation
Work Done in Stretching a Wire

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