Question

Define Moment of a couple. ​

Answer 1

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A couple is a system of forces with a resultant moment but no resultant force. 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.

Answer 2

Answer:

1.Rotating effect of a couple is known as moment of a couple.

2.It is measured by the product of any one of the forces and the perpendicular distance between the line of action of two forces.

3.Moment of a couple = Force × perpendicular distance between the line of action of forces.

M = F × S

4.Exampl: Turning a tap, winding or unwinding a screw, spinning of a top, etc..