Problem 22.10: Electroscope

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A charged ball with a mass of 30 grams is hung pendulum-like as shown (position is given in meters and time is given in seconds). A second ball with a negative charge of 3 mC is placed on a wood table. Play the animation and move the ball on the table toward and away from the pendulum. Restart. What is the charge on the pendulum? (Assume that the charge on the two balls is uniformly distributed.)

Physlets were developed at Davidson College and converted from Java to JavaScript using the SwingJS system developed at St. Olaf College.

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Open Source Physics - EJS Modeling
Physlet Physics
Physlet Quantum Physics
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