Identical thin rods of length 2a carry equal charges 1Q
Chapter 23, Problem 84(choose chapter or problem)
Identical thin rods of length 2a carry equal charges 1Q uniformly distributed along their lengths. The rods lie along the x axis with their centers separated by a distance b . 2a (Fig. P23.84). Show that the magnitude of the force exerted by the left rod on the right one is F 5 a keQ 2 4a 2 b ln a b 2 b 2 2 4a 2 b
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