More vector math.
a. Two charges Q are fixed as shown (I'll draw a picture). A third charge -q (of mass m) is initially along the perpendicular bisector of the two Q's a distance x above the line connection them. It is then released from rest. Qualitatively describe the
motion of the charge -q. Discuss force directions, accelerations, velocities, positions, etc.
b. Determine the force as a function of x. Assuming that x

Question

More vector math.
a. Two charges Q are fixed as shown (I'll draw a picture). A third charge -q (of mass m) is initially along the perpendicular bisector of the two Q's a distance x above the line connection them. It is then released from rest. Qualitatively describe the 
motion of the charge -q. Discuss force directions, accelerations, velocities, positions, etc. 
b. Determine the force as a function of x. Assuming that x<<D, determine the simple harmonic oscillation period of the charge -q.

kkutie7 · Answer

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kkutie7 · Answer

$$|F|=|\frac{-qQ}{4\pi \epsilon_{0} (\sqrt{x^{2}+D^{2}})^{2}}|$$

kkutie7 · Answer

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kkutie7 · Answer

my answer for the force isn't right. i'm not sure how to get to the correct answer.