The second wire is stretched by 15.4 cm long provided the two-wire are made of the same materials and equal forces.
Young's Modulus of Elasticity explains the elastic characteristics of a solid experiencing tension or compression in a unilateral direction
Here, the material used is a wire which returns to its length after being stretched or compressed.
From the parameters given:
If the second wire is as twice as first, then:
where;
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