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Determine the force required to double t...

Determine the force required to double the length of the steel wire of area of cross-section `5 xx 10^(-5) m^(2)`. Give Y for steel `= 2 xx 10^(11) Nm^(-2)`.

Text Solution

Verified by Experts

Increase in legth `=l = L`
`Y = ( FL )/( Al ), F = ( Yal)/( L )`
`F = ( 2 xx 10^(11) xx 5 xx 10^(-5) xxL)/( L) = 10^(7) N`
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