Hi all,

I have been given component x- and y- for F1=(8.0*10^7N,7.0*10^7N)
F2=(4.0*10^7N,-2.0*10^7N) for an object.

Which following my textbooks have found the following vector components:
F1+F2=(1.2*10^8N,5.0*10^7N)

Now I want to find the distance from earth that this object has the same magnitude force as above.

So I was thinking of using F=Gm1+m2/d^2

but in order to do this I want to rearrange the equation to solve for d^2... however im unsure how to work with component vectors in this form i.e should I add the x and y components together to end up with 1.7*10^8N? and then set that as F?

Any pointers would be great!
Thanks