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An axial tensile force of 125 kN is applied to a solid, rectangular, structural steel bar with cross section dimensions 25 mm x 25

An axial tensile force of 125 kN is applied to a solid, rectangular, structural steel bar with cross section dimensions 25 mm x 25 mm. The length of the bar is 100 mm. Let E = 200 GPa and v = 0.29. (a) determine the change in the cross-sectional area of the bar in square millimeters (b) determine the change in length of the bar in millimeters

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