Section: Solid Mechanics | Marks: 2
A small railway bridge is constructed from identical steel truss members, each of length l , cross- sectional area A and Young’s modulus E . A train stops on the bridge. The loads applied by the train on the truss on one side of the bridge may be assumed to act at pins A, B and C, as shown. The displacement of the support C due to this loading is
- A. 0
- B. /( ) Ql AE
- C. 3 /(4 ) Ql AE
- D. /( 3 ) Ql AE
Answer: D. /( 3 ) Ql AE