Using 5 point charges, finding the charge of q1 and q2 using given force

AI Thread Summary
To determine the values of q1 and q2 that result in zero net force on the three point charges, the law of Coulomb must be applied. The discussion emphasizes the importance of analyzing the direction of forces acting on each charge and visualizing the forces through diagrams. It is noted that the complexity increases with more than two charges, but the principle remains that all forces must balance out to achieve equilibrium. Participants suggest focusing on the cancellation of forces acting in opposite directions. Understanding these concepts is crucial for solving the problem effectively.
MissJewels
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Homework Statement


The figure shows five point charges placed on a line, at intervals of 1 cm. For what values of q1 and q2resultant electrical force exerted on each of the three charges is zero?
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Homework Equations


I imagine the law of coulomb is used here, however, I'm not sure how I'm supposed to tackle this one, since the resulting force on the given charges is zero. I guess, it gets confusing when you add more than 2 charges. Anyway, anyone have any hints to help me figure this one out?


The Attempt at a Solution


Haven't got an idea
 
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It's the same as adding 2 forces except now you're adding 4!

Think about what direction each force is acting on and draw some pictures. You know that the total force = 0. In other words. The forces acting to the left have to cancel out the forces acting to the right.
 

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