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Calculate the work done in stretching the wire of volume=22 m^3 and the values of stress and strain are 2 N/m^2 and 4.

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Calculate the work done in stretching the wire of volume=22 m^3 and the values of stress and strain are 2 N/m^2 and 4.

(a) 66 J

(b) 44 J

(c) 22 J

(d) 88 J

The question was posed to me in my homework.

This interesting question is from Motors Rating and Heating in section Rating and Heating of Motors of Electric Drives

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The correct answer is (d) 88 J

Explanation: The work done in stretching a wire is .5×Stress×Strain×Volume. The value of the work done is .5×22×4×2=88 J.

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