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Question: 415 assuming that he temperature in bar 14 of the...

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4.15. Assuming that he temperature in bar 1-4 of the truss shown in Fig. P4.10 is increased by AT degrees, that external load P is absent, and that each bar has the same EA and α, find the nodal displacements, member forces, and reaction force R. Also check the equilibrium of joint4. 2 45 45° 4 Figure P4.123 30° 30° 4 60 Figure P4.10

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