Two bars, one of steel and the other of copper having areas of cross-sections As and Ac, coefficient of expansion αs and αc and Young's Modulii Es and Es are rigidly connected together at the ends and subjected to temperature change of t°. If the length of the bars initially is L, the final extension δ of the two bars at t° temperature is given by-A-B-C-D--A-

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Two bars, one of steel and the other of copper having areas of cross-sections As and Ac, coefficient of expansion &alpha;s and &alpha;c and Young&#39;s Modulii Es and Es are rigidly connected together at the ends and subjected to temperature change of t&deg;. If the length of the bars initially is L, the final extension &delta; of the two bars at t&deg; temperature is given by-A-B-C-D--A-

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