Electron Suspended Between the Surface of The Earth

  • Thread starter PepeF.
  • Start date
  • #1
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Homework Statement



An Electron remains suspended between the Earth (assumed nueutral) and a fixed positive point charge, at a distance of 6.37 m from the point charge.
Determine the charge for this to happen.
answer must be in C.

Homework Equations


g= 9.8 m/s^2
Coulomb constant = 8/98755e9 N* m^2/C^2
Kc= 8.99e9
Fe= Kc (q1*q2)/r^2

The Attempt at a Solution



I am confused with this question,. please help me out
 
Last edited:

Answers and Replies

  • #2
22
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What's the question asking for?
 
  • #3
16
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What's the question asking for?

it says

determine the charge for this to happen
 
  • #4
22
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Well think in terms of force of the condition that causes this equilibrium. Write down the equation for the two forces involved and the rest is just simple algebra (then a calculation when you stick the numbers in).
 

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