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A mass of 4kg is hung from a metal wire ...

A mass of 4kg is hung from a metal wire of radius 0.5 mm and length 3m. Find the extension produced in the wire. What should be minimum radius of the wire so that the elastic limit of `20 xx 10^7 N/m^2` of the metal wire is not exceeded ? Y=20x10^10N/m^2.

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MBD PUBLICATION-MECHANICAL PROPERTIES OF SOLIDS-QUESTION BANK
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