(1) A charge +Q is located at the origin and a second charge, +2Q, is located...
(1) A charge +Q is located at the origin and a second charge, +2Q, is located at x= 17.0 cm . Where should a third charge q be placed so that the net force on q is zero? Find q 's position on x -axis.
Homework Answers
The right answer is x=7.04. I assumed in the first line that the charge q is located in between the two charges and based on this assumption I write the force equation. The force equation had opposite signs due this assumption, and i was able to solve for x by substituting F=0
The force is not zero at x=-41.04 in the physical scenario. Since for x<0, both the forces on q would be acting towards the left(if q was positive), as a result the force equation will not contain opposite sign and we would not be able to solve for x by substituting F=0
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