A steel wire AB of length $$100$$ cm is fixed rigidly at points A and B in an aluminium frame as shown in the figure. If the temperature of the system increases through $$100$$°C, then the excess stress produced in the steel wire relative to the aluminium?α$$Al=22$$×$$10$$−$$6/0C$$ and αsteel $$=11$$×$$10$$−$$6/$$∘C young's Modulus of steel is $$2$$ × $$1011$$ Nm–$$2$$.

Question

A steel wire AB of length $$100$$ cm is fixed rigidly at points A and B in an aluminium frame as shown in the figure. If the temperature of the system increases through $$100$$°C, then the excess stress produced in the steel wire relative to the aluminium?α$$Al=22$$×$$10$$−$$6/0C$$ and αsteel $$=11$$×$$10$$−$$6/$$∘C young's Modulus of steel is $$2$$ × $$1011$$ Nm–$$2$$.

Infinity Learn · Accepted Answer

Net elongation  Δ$$=aAl$$−aStlΔtStress $$=$$ $$Y(Strain)$$

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