Question

The couple moment and the force is divided to get the distance of the axis from the point of action of the force in free body diagrams.

(a) True

(b) False

I got this question in an international level competition.

I would like to ask this question from Different Free Body Diagrams topic in chapter Equilibrium of a Rigid Body of Engineering Mechanics

Answer 1

Correct choice is (a) True

To elaborate: The couple is the cross product of the force and the perpendicular distance between the forces. And if the division of the both is done than the resulting quantity is the distance only. But care must be taken that the product is the cross product and hence sine angle must be divided too to get the distance.