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Question: for the bar shown below use the direct stiffness method...

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For the bar shown below, use the direct stiffness method to determine a. a) the displacement of each node b. b) the reaction forces at nodes 1 and 4. Given data: A 1200 mm2, An-3700 mm2, Am 1800 mm2 E-200 GPa for all elements III4 120 kN 300 kN 3.5 m 7m 4.5 m

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