Question

The moment diagram is when the cantilever beam whose free ends are applied with bending moment.

• A. cubic parabola
• B. parabola
• C. triangle
• D. rectangle

Answer 1

Answer:

D. rectangle

When a moment is applied at the free end of a cantilever beam, it will be transferred to the fixed end with constant magnitude. Hence, the Bending Moment Diagram (BMD) is a rectangle as the bending moment is constant throughout the beam. This is an example of pure bending where the shear force is zero throughout the beam. The fixed end moment is equal to the applied moment.