Thrust,drag and lift on airplane Question

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Homework Statement



If the engine thrust is F(T)=130kN and the plane's weight is W=180kN,determine the atmospheric drag F(D) and the wing lift F(L).
What is the distance s to the line of action of the drag force?


The Attempt at a Solution



Well I have trouble with this question because I don't know where to start.In my statics book there is nothing on airplanes or about drag,thrust and lift.

I was thinking like the resultant force = F(T)- F(D)

I don't know the relationship between the drag,thrust and lift and couldn't find anything in my statics book.
So any hint or advice how to start it would be greatly appreciated or is there any equation I need to use.
Thanks.

http://img685.imageshack.us/img685/1364/11212009113824am.jpg
 
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its flying at constant velocity... so all accelerations must be zero, ie. static equilibrium...
 
so then the drag is 130 and the lift is 180
and to determine s I can take moments at point where W is pointing
is this right?
 
To solve this, I first used the units to work out that a= m* a/m, i.e. t=z/λ. This would allow you to determine the time duration within an interval section by section and then add this to the previous ones to obtain the age of the respective layer. However, this would require a constant thickness per year for each interval. However, since this is most likely not the case, my next consideration was that the age must be the integral of a 1/λ(z) function, which I cannot model.
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