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3. A steel wire 2 m long and 3 mm in diameter is extended by 0.75 mm when a weight of W is suspended from

3. A steel wire 2 m long and 3 mm in diameter is extended by 0.75 mm when a weight of W is suspended from it. If the same weight is suspended from a brass wire, 2.5 m long and 2 mm in diameter, it is elongated by 4.64 mm. Determine the modulus of elasticity of brass if that of steel is 2x105 N/mm. (Eb = 90.9 kN/mm2)

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