- #1
AnthroMecha
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Homework Statement
Three charges are placed along a meter stick. One charge, q1, is placed at the 12.1cm mark. A second charge, q2, is placed at the 27.2cm mark. The third charge, q3, is placed at the 48.5cm mark. Charge q1 is equal to +171μC. What must be the sign and magnitude of charge q3 such that the total electrical forces on charge q2 add to zero?
Homework Equations
Coulomb's law
The Attempt at a Solution
I tried equating the Electrostatic force of q1 on q2 to the electrostatic force of q3 on q2, but I don't believe it came out right.
8.99 X 10^9 Nm^2/C^2 * (171μC*q2/15.1^2)=-8.99 X 10^9 Nm^2/C^2 * (q2*q3/21.3^2)