Electrostatics 1 Question 11
11. Two equal negative charges are fixed at points and on -axis. A positive charge is released from rest at the point on the -axis. The charge will
(a) execute simple harmonic motion about the origin
(b) move to the origin and remain at rest
(c) move to infinity
(d) execute oscillatory but not simple harmonic motion
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Answer:
Correct Answer: 11. (d)
Solution:
- Motion is simple harmonic only if
is released from a point not very far from the origin on -axis. Otherwise motion is periodic but not simple harmonic.