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A uniform steel wire of cross-sectional ...

A uniform steel wire of cross-sectional area `0.20 mm^2` is held fixed by clamping its two ends. Find the extra force exerted be each clamp on the wire if the wire is cooled from `100^0C to 0^o C`. Young's modulus of steel `= 2.0 xx 10^11 N m^(-2)`. Coefficient of linear expansion of `=1.2 xx 10^(-5) C^(-1)`.

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