How Do Electron and Positron Speeds Relate to Their Charge and Separation?

AI Thread Summary
The discussion revolves around calculating the speed of an electron and a positron as they revolve around their common center of mass due to their attractive Coulomb force. The relevant equation for the force between the particles is given by F = kq1q2/r^2. Participants suggest using centripetal acceleration to derive the speed in terms of charge, mass, and separation. The conversation indicates a focus on finding angular speed as a potential approach to solving the problem. Overall, the thread emphasizes the relationship between charge, mass, and the dynamics of particle motion in a Coulombic system.
nns91
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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 ?
 
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Hi nns91! :smile:

Hint: use centripetal acceleration :wink:
 

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