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

A 10-cm long thin glass rod is uniformly charged to +50 nC. A small plastic bead, charged to - 5.2 nC, is 4.1 cm from the center of the rod. What is the magnitude of the force on the bead?

2. Relevant equations

dF = (k dq)/r[tex]^{2}[/tex]

3. The attempt at a solution

I've gotten to this point:

dF sin [tex]\theta[/tex] = k[tex]\lambda[/tex] * (dx/(h[tex]^{2}[/tex] + x[tex]^{2}[/tex])[tex]^{3/2}[/tex]) * (h/[tex]\sqrt{h^{2} + x^{2}}[/tex])

and I understand fairly well how and why. But now I have no idea where to go from here, aside from the fact that I have to integrate at some point. I know the two halves of the rod are equivalent so I can integrate from 0 to 5 and double (right?).

What do I do? :grumpy:

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# Homework Help: Force due to a line charge

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