# What is the net electric force acting on Q2?

Calculate the net force.

### 1 Answer

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- peterpanLv 71 month agoFavorite Answer
F2 = F1 + F3

F1 = k q2 q1 / d1^2

F3 = k |q3| q1 / d3^2

F2 = k q1 (q2 / d1^2 + |q3| / d3^2)

d1 = 2 d3

then

F2 = (k q1 / d3^2) (q2 / 4+ |q3|)

F2 = (9x10^9*10^-4 / 4)*(2x10^-4 / 4 + 5x10^-5) = 22.5 N

F2 is directed toward q3

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