Question

What do you understand by positive and negative moment of force?

Answer 1

Definition of the positive moment of force

1. It is called a positive moment if the force produces an anti-clockwise rotation about the given turning point in the rigid body.

Definition of the negative moment of force

1. If the force produces a clockwise rotation about the given turning point in the rigid body, it is called a negative moment.
2. Thus anti-clockwise rotation can be considered a positive moment of force while clockwise rotation can be considered a negative moment of force.