How can you measure the moment of couple ?

1.	How can you measure the moment of couple ?
Answer» Solution :(i) Rotating effect of a couple is known as MOMENT of a couple. (ii) Moment of a couple is mensured by the product of any ONE of the FORCES and the perpendicular DISTANCE between the line of action of two forces. The turning effect of a couple is measured by the magnitude of its moment. (III) `"Moment of a couple" =" Force" xx" perpendicular distance between the line of action of forces"` `M=FxxS" …………… "` (iv) The unit of moment of a couple is newton metre (N m) in SI system and dyne cm in CGS system. (v) By convention, the direction of moment of a force or couple is taken as positive if the body is rotated in the anti-clockwise direction and negative if it is rotate in the clockwise direcetion. They are shown in Figures.

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