A metal ball suspended from a thread is placed between the plates of a capacito. How will the oscillation of this pendulum change if the ball and plates of the capacitor is charged

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Solution

As the pendulum approaches the plate it will be attracted so it wil swing a little farther towards that plate. At the end of the swing the pendulum will accelerate a little more slowly away from the plate. This repeated at the other end of the swing.

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