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  • When a force is applied at one end of an elastic wire, it produces a strain E in the wire. If Y is the young modulus of the material of the wire, the amount of energy stored per

When a force is applied at one end of an elastic wire, it produces a strain E in the wire. If Y is the young modulus of the material of the wire, the amount of energy stored per unit voume of the wire is given by -

Option: 1

Y\times E


Option: 2

\frac{1}{2}(Y \times E)


Option: 3

Y\times E^2


Option: 4

\frac{1}{2}(Y\times E^2)


Answers (1)

best_answer

Energy\ per\ unit\ volume\ =\ \frac{1}{2}\times stress\ \times strain

                                                         =\ \frac{1}{2}\times (Y\times strain)\times strain

                                                         =\ \frac{1}{2}\times Y\times E^2

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Rishi

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