Recent content by cogman

Turns out I'm an idiot. :) long story short, I was trying to take the magnitude of a vector in the i and j direction by trying to square each component of that i and j vector. You can't do that. the final answer comes to be something like |F_{T}|sin(\theta) = q\lambda |F_{T}|cos(\theta) = mg...

Thanks, I'll probably check it out later, however, Theoretical physics is probably not what my teacher wants to see in an introductory Electro-magnetic physics course. I'm mostly just trying to confirm that I've done the math correctly (and if not, where did I go wrong)

Ok, taking your advice (sorry for the delay in posting) here is my second stab at it. F_{e} + F_{g} + F_{T} = 0 F_{e} = q\lambda \hat{i} + q\mu \hat{j} F_{g} = -mg \hat{j} We Should be able to say that F_{T}\hat{i} = -q\lambda \hat{i} because gravity doesn't contribute anything in the \hat{i}...

Homework Statement A charged particle of mass m is suspended on a massless-string in the presence of a uniform electric field. When the electric field is \vec{E} = \lambda \hat{i} + \mu \hat{j} N/C the ball is in equilibrium at \angle \theta (\lambda > 0 and \mu > 0) Determine the charge...

I hope that this belongs here, so here is what I would love help with. We are doing Electric potential energy in class right now (and we did electric field prior) but I am struggling with the form the integral needs to take. Once I get it, I can do the math, but it is just understanding all the...