Yes, but.....
In simple terms we use a point termed the centre of pressure, which is the point on the wing chordline where the total lift may be considered to act.
In reality this point cannot exist, but we may make empirical calcultaions based upon its' existence and its' position with respect to percentage of the wing chord.
I am able to supply a diagram showing just how the pitching moments are derived and how they change with changing angle of attack/CL.
Edit to say prolly best done via PM.
Last edited by Lightning Mate; 12th Jan 2011 at 11:18.