Monday, June 29, 2015

homework and exercises - Surface charge density relation with the radius of curvature at the surface of a conductor



In a text book it was given that the surface charge density of a conductor at a particular region on its surface is inversely proportional to the radius of curvature at that region. I didn't understand it. I'd like to see a proof for that can anyone please post the proof.





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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...