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A 2.5x 10^5 kg mass presses down 18 inches high stock file that causes the file to deform at 2.7 cm and the shear modulus of 7.4 x10^10 N/m 11. What is the area of the stock file?

A 2.5 x 105 kg mass presses down 18 inches high stock file that causes the file to deform at 2.7 cm and
the shear modulus of 7.4 x 1010 N/m 11. What is the area of the stock file?

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