21. Determine the member force and axial stress in each member of the truss shown in the...

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21. Determine the member force and axial stress in each member of the truss shown in the figure using one of FE analysis programs in the Appendix. Assume that Young's modulus is 104 psi and all cross-sections are circular with a diameter of 2 in. Compare the results with the exact solutions that are obtained from free-body diagram.

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