Electrostatics. finding the resultant force

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SUMMARY

The discussion focuses on calculating the resultant force on two point charges, specifically a -2μC charge and a 5μC charge, positioned in a linear arrangement with distances of 2 cm and 4 cm between them. The relevant equation used is Coulomb's Law, expressed as F = k * (q1 * q2) / r², where k is the electrostatic constant. Participants are encouraged to share their attempts to identify where discrepancies arise in their calculations compared to the answer key.

PREREQUISITES
  • Coulomb's Law for electrostatic force calculations
  • Understanding of point charges and their interactions
  • Basic algebra for manipulating equations
  • Knowledge of unit conversions, particularly microcoulombs (μC) to coulombs (C)
NEXT STEPS
  • Review the application of Coulomb's Law in multiple charge systems
  • Explore vector addition of forces in electrostatics
  • Study the concept of superposition in electric forces
  • Practice problems involving different configurations of point charges
USEFUL FOR

This discussion is beneficial for physics students, educators, and anyone seeking to deepen their understanding of electrostatics and force calculations involving point charges.

anoel
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anyone can help me out? I've tried but my answer and answer key are differnet!

Homework Statement



three point charges lie on a straight line. find the resultant force exerted on (a) the -2[tex]\mu[/tex]C charge, (b) the 5 [tex]\mu[/tex]C charge

1 (5[tex]\mu[/tex]C) 2(-2[tex]\mu[/tex]C) 3(3 [tex]\mu[/tex]C)

distance b/w 1,2 = 2cm
distance b/w 2,3 = 4cm




Homework Equations



k q1 x q2 / distance^2


The Attempt at a Solution

 
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please show your attempt even if it was not correct so we can see at which step you have problem ..
 

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