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A steel wire and a copper wire of equal length and

Question:

A steel wire and a copper wire of equal length and equal cross-sectional area are joined end to end and the combination is subjected to a tension. Find the ratio of (a) the stresses developed in the two wires and (b) the strains developed. Y of steel = $2 \times 10^{11} \mathrm{~N} / \mathrm{m}^{2}$, Y of copper $=1.3 \times 10^{11} \mathrm{~N} / \mathrm{m}^{2}$.

Solution:

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