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

The figure shows two 5.0 g spheres suspended from 1.0-m-long threads. The spheres repel each other after being charged to +31 nC. What is the angle θ ?

2. Relevant equations

3. The attempt at a solution

i tried it by writing equation in the x and y component for one of the ball and then i would have two unknowns tension and the radius.

now for sin (theta) = r/1

cos (theta) = sqrt(1-r^2)

so for the columbs force the radius would be 2r.

now i solved for r = 4.4108*10^(-5)

this doesn't make sense, i would get the angle to be 2.53*10^(-3)

but the choice for the angles are :

Thanks for helping

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# Homework Help: Columb force Question

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