Question: 2. Determine the vertical displacement at joint B and horizontal displacement at jointD using Castigliano's Second Theorem. The truss is pinned and roller at

2. Determine the vertical displacement at joint B and horizontal displacement at

2. Determine the vertical displacement at joint B and horizontal displacement at jointD using Castigliano's Second Theorem. The truss is pinned and roller at A and C, respectively. Use, E = 200 GPa and A = 2400 mm?. E = 200 x 10 N/m?. 20 kN 60 4 m 3 m 3 m

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