Recent content by rehab

It's 12:11 here and this is time for bed this is clearly the reason for this unforgivable mistake :). well, I can't think of anything but (f*pi''maximum angle''/2*pi ''the total period'') *L.

So, should I replace ##t## by theta/##L##?

well, simply measure the initial {\theta} and then {\theta} at some stop time ##t##, then multiply the result with ##L##. why does having ##t## as a parameter doesn't make sense?

It should be written with the sic function for some reason I wrote it with the cos function. for Vo:

Oh, yeah I just realized that I inadvertently wrote down the cos function where it should be the sin function instead, is it right now? And what do think about this expression for Vo?

1. but it doesn't add anything because the solution theta= A cos(theta) 'let's ignore the sin term' at t =0 is theta = A and from the problem, this is just zero. Right?

Why? the problem stated that at first, it was at rest in equilibrium!

Summary: Hi, I'm trying to solve this problem, if it's not right then please help me with a hint without solving it. This formula is just an approximation for small values of theta, but if Vo was greater than the denominator this will lead to large values of theta and then this solution is not...

my question is why the electric force has a zero component along the z-direction if it does not depend on the dot product of the E field and the velocity in Z?

Yeah I know that but I meant the total motion in Z direction due to the fields , regardless of the velocity

here I'm not talking about the component of velocity , I'm asking about why the total motion=force in the z direction is zero ?

Hi, I have a question about the motion of a charged particle in crossed E and B fields. if B was pointing in the Z direction and E in the y direction then the component of the motion in the Z plane = 0. The only reason for this to happen is that the electric force due to the E field depends on...