Question

What is moment of couple

Answer 1

Moment of couple is the product between either force applied and the perpendicular distance between the two forces or Moment arm.

Answer 2

In mechanics, a couple refers to two parallel forces that are equal in magnitude, opposite in sense and do not share a line of action. A better term is force couple or pure moment. Its effect is to create rotation without translation or, more generally, without any acceleration of the centre of mass.