Homework Statement
A conical Pendulum, a uniform, thin rod of mass m and length l, rotates about a vertical axis with angular velocity omega. Find the angle between the vertical and the rod.
Homework EquationsThe Attempt at a Solution
I know the usual approach to solve this question, write the...
Wait, are you implying that the sum of the electrostatic forces may be converged to any real number?
It still seems to me that, by symmetry, that it would sum up to be zero, always :/
Still not too clear..
I agree, that was the part I was not convinced about, anyway.
But then how do we explain the fact?
Is there any other argument that we may put forward to explain it?
Homework Statement
Can we consider the universe to have a uniformly charged distribution?
If so, shouldn't the field at any point in space be zero? Since the universe is infinite, will it be symmetrical about any point, field should be zero right? Why is this not true?[/B]2. The attempt at a...