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A two member truss PQR is supporting a load W. The axial forces in members PQ and QR are respectively
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- 2W tensile and √3W compressive
- √3W tensile and 2W compressive
- √3W compressive and 2W tensile
- 2W compressive and √3W tensile
- 2W tensile and √3W compressive
Correct Option: C
Lami’s theorem is used to find the F
| = | = | ||||
| sin 30° | sin 60° | sin 270° |
⇒ TPQ = √3W (T)
⇒ TQR = – 2 W = 2W(C)
