Recent content by jaredvert

How come when he spins it the magnet accelerates faster down? Is it because the area of the plates perpendicular to the sides are smaller and so smaller current induced?

Also I've read the whole giancoli physics based on calc 3 and I've never run into forces between permanent magnets.

Yeah I mean I was sure there was a pot energy between them but I didn't know the force between them so I couldn't calculate the pot energy between them. Are these equations created empirically?

Oh so I see because it has less velocity it's KE is less and so the energy induced to the emf is equal to mgh - 1/2mvf^2. Where vf is velocity in coil. Correct?

Unfortunately I am not sure how to calculate the force between two magnets, only between mag fields and wires

Well gravity but I imagine it's acceleration is slower due to the magnetic force exerted on it

Yeah I mean I think I get lenz law but can u explain what I'm missing here? The magnet falling induced a counterclowise current in the copper. Where the energy for this emf is what I don't understand

Ok so here is something I don't understand. I've had electricity and magnetism course but I never learned of any such thingn. Why not? Is this stuff told of later on?

It is the induced emf in the copper tube correct? It would make a counterclockwise current. But what I don't understand is where is the energy for this induced emf coming from?

Kkkkkkk

Then what gives the energy to create this emf?

To each other? Repondez!

But that contradicts the right hand rule? Even if that does sound bad, are you saying the RHR only applies at certain times?

Yes perhaps. So is an inductor basically the same concept as this situation right here?

It's a high school teacher and he didn't specify but I didn't have time to think about it because class was ending