Let A be the last digit and let B be the second to last digit of your 8-digit student ID.  A steel wire is used to lift heavy object. The cable has a diameter of 9.25 mm and an initial length of 24.5 m. If the cable stretches 2.50 mm, what is the mass of the heavy object? Use 20.0 x 1010 Pa for Young’s modulus for steel. Give your answer in kg and with 3 significant figures.

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