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japam

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gived a fixed point A charged with Q1 charge,

gived a electrical wire of fix length L and charge Q2 distributed uniformly in it,

the wire is fixed at its edges at 2 points along a line L,

the line L and the point A are separated by a fixed distance s

to find the curve of the wire that provides the strongest attraction to the fixed point

the wire is supposed withouth weight

somebody could explain what are the math involved here? thanks