Net Electric Force Homework: Find Negative Charge Position

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SUMMARY

The discussion centers on determining the position of a negative charge that experiences a vertically upward net electric force when placed in the vicinity of two positive charges, Q1 and Q2. The relevant equation used is Coulomb's Law, F = k|q||q| / (r^2), which describes the force between charged particles. The user initially struggled with the calculations but ultimately resolved the problem independently.

PREREQUISITES
  • Understanding of Coulomb's Law and electric forces
  • Knowledge of vector addition in physics
  • Familiarity with charge interactions (positive and negative)
  • Basic algebra for solving equations
NEXT STEPS
  • Study the principles of electric field direction and magnitude
  • Learn about superposition of forces in electrostatics
  • Explore the concept of equilibrium in charged systems
  • Investigate graphical methods for solving force problems
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Students in physics, particularly those studying electrostatics, educators teaching electric forces, and anyone interested in solving problems related to charge interactions.

Sylvia
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Homework Statement


screen_shot_2015-02-04_at_7.27.36_pm.png
[/B]
In the above figure, if Q1 and Q2 are positive, where could a negative charge be placed and have a vertically upward net force on it?

Homework Equations


F = k|q||q| / (r^2)

The Attempt at a Solution


I wrote the force equations for the negative charge and both positive charges, but I have no idea how to proceed from there.
 
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Please do not reply, I have figured this out
 

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