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A steel wire of length 7 m and cross sec...

A steel wire of length 7 m and cross section 1`mm^(2)` I suspended from a rigid support, with a steel weight of volume ` 10^(3) cm^(3)` hanging from its other end. Find the decrease in the length of the wire when the steel weight is completely immersed in water.
` Y_("steel") = 2xx 10^(11) N//m^(2) ` density of water `= 10^(3) kg//m^(3)` ]

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The correct Answer is:
`0.343 mm`
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