Which of the following beams is likely to have the point of contraflexure?
Beam with over hangs
Both beams fixed at both ends and beams with overhangs are likely to have points of contraflexure because their support and loading conditions create regions of both positive and negative bending moments. Specifically, in a beam with overhangs, the segment over the interior support typically experiences negative bending due to the load on the overhang, while the segment between supports experiences positive bending. Therefore, the correct answer is Beam with over hangs.
Important Questions from Bending Moment
For a simply supported beam carrying distributed load w per unit length, consider the following relations between shear force F and bending moment M.
A. \(\rm w=-\frac{dF}{dx}\)
B. \(\rm w=-\frac{d^2M}{dx^2}\)
C. \(\rm F=\frac{dM}{dx}\)
Which of the above statements is/are correct ?
A simply supported beam of 4 m span carries a uniformly distributed load all over the span of 20 kN. The maximum bending moment is
When a beam is subjected to a bending moment, the strain in a layer is _____ the distance from the neutral axis.
- A cantilever and a simply supported beam have the same length and are subject to the same uniformly distributed load. The ratio of their maximum bending moments is
For a cantilever beam of length 2 m, under load of 1 kN/m, the maximum bending moment is
