At an unloaded joint of a pin jointed truss, three members meet, and two of them are collinear. What is the usual conclusion?
Correct answer: A. The noncollinear member carries zero force
- A. The noncollinear member carries zero force
- B. The collinear members carry equal compression
- C. All three members carry equal force
- D. The noncollinear member carries maximum force
Explanation
The noncollinear member is a zero force member because equilibrium at the joint cannot balance a force in its direction when no external load acts. The two collinear members may carry equal and opposite forces.
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Structural analysis determines how beams, frames, trusses and arches carry loads through reactions, shear forces, bending moments, axial forces and deflections. It covers free-body diagrams, equilibrium equations, determinacy, influence lines and methods such as slope deflection, moment distribution and virtual work, while distinguishing analysis of a structure from its design.
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