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What hanging mass will stretch a 2.4-m-long, 0.49 mm - diameter steel wire by 1.5 mm...

What hanging mass will stretch a 2.4-m-long, 0.49 mm - diameter steel wire by 1.5 mm ? The Young's modulus of steel is 20×10^10N/m^2

Express your answer in kilograms.

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Answer: 2.405kg

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