Re: Coulomb Force Between A Charge Rod & A Particle
- From: "Randy Poe" <poespam-trap@xxxxxxxxx>
- Date: 30 Aug 2006 11:10:22 -0700
Adam Teasdale Hartshorne wrote:
Hi All,
I have a simple physics question, which I wonder if somebody could help
me with as I am a computer science person trying to use Coulomb force as
an error metric.
In 3D space, if I have a charged rod, (length l with start and end
points, r1 and r2) and an oppositely charged particle positined at p1,
what is the coulomb force between them?
I am assuming you have to integrate the standard coulomb force between
two particles along the rod (Excuse the poor english),
That is correct. However, it isn't a very difficult integral.
See here:
http://www.phys.uri.edu/~gerhard/PHY204/tsl31.pdf
I think you will find "Electric Field of Charged Rod (2)" most
useful. There are expressions for the x and y components
of the vector electric field. The force on the particle at p1 is
E times the charge at p1.
- Randy
.
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