- #1
Aphrael
- 24
- 0
Homework Statement
Two small pith balls, each of mass m = 12 g, are suspended by 1.2 m fine (so that we can neglect their mass in this problem) strings and are not moving. If the angle that each string makes with the vertical is q = 42.6, and the charges on the two balls are equal, what is that charge (in C)?
2. Homework Equations /attempt at solution
I have tried to solve this by using string tension and setting it equal to mg, but I am missing something and can't figure it out. I tried originally to just use Coulomb's law, but I just hit a dead end there. I did find that that length between the two balls is 12.8 meters, but I'm not sure now if that is relevant. I have worked on this problem for over a half hour and have essentially gotten no where. I am very stuck, please help me.
Thanks,
Aphrael