Recent content by tejas

check Feynman lectures on physics, part II chapter on AC circuits beginning from 22-1. I think it is what your are looking for. I think Feynman explains it better than I would.

Hello everyone, I've known since high school, that I want to teach physics, probably at an university. Not only study physics, but especially teach it. I love teaching basically more than anything else, last year I taught 2 courses to high school students(at the same time I was in high school...

Ok I understand that, but how it solves the problem that only half of the frictional force is needed to move the m2 when m1 tends to 0?

anyone?

well, the total force on m1 is F - kx- m1gk. the force on m2 is simply kx, until kx = m2gk. anyways, now about the work. A = integral (Fdx) (sry I don't know how to post equations) then A = Fx - kx^2/2 - m1gkx. is that zero? dunno. This is the work done on m1 by the sum of the forces on...

two masses, m1 and m2 are connected with an undeformed light spring and lie on a surface. the coefficents of friction between the masses and the surface are k1 and k2, respectively. What is the minimum constant force F, that needs to be applied in the horizontal direction to the m1, to shift the...

HI, I understand everything, except that in the solution, dz is written as R d\phi. why is that? shouldn't it be Rsin(phi)d(phi) or even, if we take x = R*cos(phi) (from that same simple geometry) than dz would be -Rsin(phi)d(phi)