This is more of a math question but:
There are two particles fixed in place: a particle of charge +8q at the origin and a particle of charge -2q
at x=L. At what point (other than infinitely far away) can a proton be placed so that it is in equilibrium
The Attempt at a Solution
The point should be at the right of the -2q charge, so it is farther away from the charge +8q.
that was the answer, but would it be possible to use
8q / (L+x)2 = 2q / (x)2
where L is the distance between the charges 8q and -2q.
I get x = L using this set up instead.
what went wrong? Shouldn't I get the same answer?