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One end of a wire 2m long and 0.2 cm^2 i...

One end of a wire 2m long and 0.2 cm^2 in cross section is fixed in a ceiling and a load of 4.8 kg is attached to the free end. Find the extension of the wire. Young modulus of steel `=2.0xx10^11Nm^-2`. Take `g=10ms^-2`.

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The correct Answer is:
`DeltaL=2.4xx10^(-3)cm`
Hint : `Y=(FlA)/(DeltaLlL)`
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