(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://img214.imageshack.us/img214/4430/fieldoc3.th.jpg [Broken]

E = (3.00i+5.00j) x 10^5 N/C the ball is at equilibrium at 37 degrees, the ball has a mass of 1 gram. What is the charge of the ball? What is the tension of the string?

2. Relevant equations

E = Fe/q0

3. The attempt at a solution

As far as I know to solve for this problem Fe must be equal to 0?

Or we should first resolve the forces acting on the ball, which is

T cos(37) - mg = 0.. am I right? I don't know what's next

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# Homework Help: Finding charges on an equilibrium position

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