A plane truss composed of two steel pipes (E 5 210 GPa, d 5 100 mm, and wall thickness 5 6.5 mm) is subjected to vertical load W at joint B. Joints A and C are L 5 7 m apart. The critical value of load W for buckling in the plane of the truss is nearly:

(A) 138 kN

(B) 146 kN

(C) 153 kN

(D) 164 kN


(A) 138 kN

Physics & Space Science

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