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A wire of area of cross section 3.0mm^2 ...

A wire of area of cross section `3.0mm^2` and natural length 50 cm is fixed at one end and a mas of 2.1 kg is hung from the other end. Find the elastic potential energy stored in the wire in steady state. Young modulus of the material of the wire `=1.9xx10^11Nm^-2. Take g=10ms^-2`

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The correct Answer is:
`1.9xx10^(-4)J`
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