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Two thin rods of length L lie along the x-axis, one between x = a/2

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Two thin rods of length L lie along the x-axis, one between x = a/2
and x = a/2 + L, and the other between x = −a/2 and x = −a/2 − L. Each rod has a positive charge Q distributed uniformly along its length. Show that the magnitude of the force that one rod exerts on the other is...

Please only assist with the last (bonus) question.

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Please find the answer in the attached file. Thank you.

This is mostly a problem of mathematics. I am going to consider point A as my reference point. (i.e. I will measure distances from this point)

Red lines are two rods. Let 's' be the linear charge density on the rod. ...

Solution Summary

The solution analyzes two thin rods of length L. The magnitude of the force is calculated.

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