What is the relationship between couples and moments in physics?

[weedannycool]

Can anybody tell me what a couple is. From what i gather it is when two forces are equal, opposite and parallel.

But but if 1 force is bigger than the other say a 2 and a 3N force could it be said that there is a couple of 2N forces ?

Does it have anything to do with moments?
__________

Daniel

 

[Studiot]

Draw yourself a force diagram showing what you have just described, with unequal forces.

Now resolve horizontally and vertically.

Does your diagram describe equilibrium?

Does that answer your question?

 

[weedannycool]

so i suppose it depends on the angle? but don't they have to be strictly parallel?