- #1
SquidgyGuff
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Homework Statement
I'm given an equilateral triangle of side length b with charges q at each corner and I have to find the y coordinate for point P on the y-axis where the electric field is equal to zero (E=0 other than the center of the triangle)
2. The attempt at a solution
I figured I'd start by finding the formula for the electric field and started here:
Then I tried to put the distances in terms of b and y:
Because of symmetry I figured that I could just take the y compponent of r1P and r2P by multipling it by sin of theta:
From there I tried to set the formula equal to zero, but it got immensly complicated.