A steel rod rho 7860 kgm3 has a length of255 m it is, Ask an Expert

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A steel rod (ρ = 7860 kg/m3) has a length of2.55 m. It is bolted at both ends between immobile supports.Initially there is no tension in the rod, because the rod just fitsbetween the supports. Find the tension that develops when the rodloses 3490 J of heat.

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