Question

What does the moment of the force measure in the bending moment diagram?

(a) The tendency of rotation of the body along with an axis

(b) The moment of inertia of the body about any axis

(c) The couple moment produce by the single force acting on the body

(d) The total work done on the body by the force

The question was asked in final exam.

This interesting question is from Bending Moment Diagram in portion Internal Forces of Engineering Mechanics

Answer 1

Right option is (a) The tendency of rotation of the body along with an axis

To explain: The moment of the force measures the tendency of the rotation of the body along any axis, whether it be the centroid axis of the body or any of the outside axis. The couple moment is produced by two forces, not by a single force. The total work done is the dot product of force and distance not the cross.