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cheechnchong
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Homework Statement
While you read this question look at this diagram http://i3.tinypic.com/3zho01t.jpg...
A small plastic ball with a mass of 6.50 x 10^-3 kg and with a charge of +0.150 uC is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). the ball is in equilibrium, with the thread making an angle of 30.0 degrees with respect to the vertical. the area of each plate is 0.0150 m^2. what is the magnitude of the charge on each plate?
The Attempt at a Solution
I tried to find q using Q = mg/E, but it ended up in a mess since I was looking for the magnitude. The area is throwing me off...I don't know how to utilize it. Honestly, this is a very tough question! would love all the help i can get. i give up after 2 days!
Answer from the textbook is 3.25 x 10^-8 C
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