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ehdubbya
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Homework Statement
My problem states that a pith ball hangs at 20 degrees from the verticle and weighs 3 grams. It is moved 10cm by a charged rod. They both have the same charge. It asks what is the charge on the ball in C and approximatley how many excess electrons are on the ball.
Homework Equations
I have the equation kqq/rsquared
The Attempt at a Solution
I found all the sides to the triangle and I do not know where to go from there. I do not know the charges so how can I use the equation with q in it?