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A metal rod of Young's modulas F and coe...

A metal rod of Young's modulas `F` and coefficient of thermal expansion `alpha` is held at its two ends such that its length remians invariant. If its temperature is raised by `t^(@)c`, then the linear stress developed in it is

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`DeltaL = alphaLDeltaT = (FL)/(AY) rArr Stress = (F)/(A) = YalphaDeltaT = Yalphat`
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