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Need help on Electric field problem

  • Thread starter nns91
  • Start date
  • #1
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Homework Statement



An electron (charge -e, mass m) and a positron (charge +e, mass m) revolve around their common center of mass under the influence of their attractive coulomb force. Find the speed of each particle v in terms of e, m, k and their separation r ?

Homework Equations



F= kq1q2/ r^2

The Attempt at a Solution



Can you guys give me a hint on this one ? Should I find the angular speed then ?
 

Answers and Replies

  • #2
tiny-tim
Science Advisor
Homework Helper
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Hi nns91! :smile:

Hint: use centripetal acceleration :wink:
 

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