Replacement of a Couple by Two Forces:
Let a couple of moment M, where the axis of the couple passes out through O perpendicular to the plane of paper as illustrated in Figure
![1162_Replacement of a Couple by Two Forces.png](https://www.expertsmind.com/CMSImages/1162_Replacement%20of%20a%20Couple%20by%20Two%20Forces.png)
This couple is equal to any two parallel forces of magnitude F working at a distance d apart such that F × d = M and the directions of the forces is so selected as to give the correct direction of M.