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Introductory Physics Homework Help
Point Charges on a Polygon with another Charge in the Middle
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[QUOTE="Nathanael, post: 6017130, member: 509990"] I didn’t check your math but I think your answers are correct. I think it could’ve been much simpler by symmetry arguments, maybe something like this: “The n-gon is unchanged by rotations of 360/n degrees. The net force should also be unchanged by this rotation (because the system is identical) and therefore must be the zero vector.” As for part 2, the principle of superposition says you can use the result from part 1 and then just add an opposite charge to one of the vertices (to make that vertex chargeless). [/QUOTE]
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Point Charges on a Polygon with another Charge in the Middle
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