Four electrons are situated at the corners of a rectangle (l=4m; w=2m). Find the resultant force electron A will experience dur to the charges at the other corners of the triangle. The green circle below represents electron A.
Fx=kq2(1l2+l(l2+w2)32),F_x=kq^2(\frac 1{l^2}+\frac l{(l^2+w^2)^\frac 32}),Fx=kq2(l21+(l2+w2)23l),
Fy=kq2(1w2+w(l2+w2)32),F_y=kq^2(\frac 1{w^2}+\frac w{(l^2+w^2)^\frac 32}),Fy=kq2(w21+(l2+w2)23w),
F=Fx2+Fy2=67.4 ⋅10−30 N.F=\sqrt{F_x^2+F_y^2}=67.4~\cdot 10^{-30}~N.F=Fx2+Fy2=67.4 ⋅10−30 N.
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