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Two steel wires are connected together, end to end, and attached to a wall. The two...

Two steel wires are connected together, end to end, and attached to a wall. The two wires have the same length and elastic modulus, but the ratio of the radius of the first wire r1 to the radius of the second wire r2 is 5:2 . As the wires are initially the same length, the midpoint of the combination coincides with the connection point. An applied force then stretches the combination by 3.250 mm while the two wires stay connected together. After the wires are stretched, what is δ , the magnitude of the distance from the midpoint to the connection point?

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