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Electrostatic force

  • Thread starter jayryap
  • Start date
  • #1
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electrostatic force!!!

Homework Statement




http://img10.imageshack.us/img10/3914/picture0117.jpg [Broken]

Homework Equations





The Attempt at a Solution

 
Last edited by a moderator:

Answers and Replies

  • #2
dx
Homework Helper
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Hi Jayryap,

Welcome to PF. Please show your attempt.
 
  • #3
6
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please help me .... i dont know what to do next...

am i correct with my work???

thank you very much!!!!
 
Last edited:
  • #4
dx
Homework Helper
Gold Member
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I'm unable to read the pictures!
 
  • #5
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a)the forces between q1 and q3
F = k * (q1 * q3/d13^2)
k = (1/4πεo) = 9 * 10^9 Nm^2/C^2 and d13= 20 cm = 20 * 10^-2 m
F=-1.125N
b)the force between charges q1 and q3 is
F1 = k * (q1 * q3/d13^2)
= -1.125N
the force between charges q1 and q2 is
F2 = k * (q1 * q2/d12^2)
=3.5N
 

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