General Studies · Engineering Mechanics
A symmetric triangular truss PRT with vertices P, R, T at the bottom and Q, S at the top is loaded at vertex U. What will be the axial force in the members PQ, RS, and TU if a single vertical downward load (W = 1 kN) is applied at U?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1FTU = 0 ; FPQ = W/3 (tensile) ; FRS = 2W/3 (compressive)
- 2FTU = W/3 (tensile); FPQ = W/3 (tensile); FRS = 2W/3 (compressive)
- 3FTU = 0 ; FPQ = W/3 (compressive) ; FRS = 2W/3 (compressive)✓
- 4FTU = 0 ; FPQ = W/3 (tensile) ; FRS = 2W/3 (tensile)
Correct answer
FTU = 0 ; FPQ = W/3 (compressive) ; FRS = 2W/3 (compressive)
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