Recent content by ursubaloo

If I remember correctly, I do not think this is the case. Set up a problem where you have an uncharged sperical metal shell (your faraday cage) and a charged object in the center. Now if you use Gauss's Law, you'll see that in fact there will be an electric field outside your cage. This is for...

Consider the following problem: (this isn't homework, I thought this problem up myself and I'm wondering how to do it) ------------------------------------- You have a simple pendulum of mass M and a radius R, which is released from the horizontal. How much time does it take to reach the...

I can imagine a substance with equal coefficients of static and kinetic friction, although I don't know of any real one, but I can't see how kinetic can be more than static. That was why I brought up that paradox to point out the fact that it logically does not make sense that kinetic friction...

Thanks for the link. It shows a little of how friction works, from what I understood from it... So I guess there is no answer really?

Everywhere I've read that static friction is usually greater than kinetic friction, but I haven't been able to find the exception to that. So I have two questions: Is there a real life example where the coefficient of static friction is less than the coefficient of kinetic friction between...