A composite wire of uniform diameter \( 3.0 \mathrm{~mm} \) consisting of a copper wire of lengt...

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A composite wire of uniform diameter \( 3.0 \mathrm{~mm} \) consisting of a copper wire of length \( 2.2 \mathrm{~m} \) and a steel wire of length \( 1.6 \mathrm{~m} \) stretches under a load by \( 0.7 \mathrm{~mm} \). Calculate the load, given that the Youngs modulus for copper is \( 1.1 \times 10^{11} \mathrm{~Pa} \) and for steel is \( 2.0 \times 10^{11} \mathrm{~Pa} \).
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