DrBanana's latest activity

I think there was a line in my textbook that went something like "because these two charged spheres have different potential, current...

For the future viewer I found this: https://physics.stackexchange.com/questions/410402/why-the-current-doesnt-flow-in-an-open-branch...

I know that a voltage difference doesn't necessarily imply current flow, but all the explanations I seem to find of that either say that...

Sorry for the overly general title but my problem is regarding a specific problem: find the net force on the bob of a pendulum as a...

The (possibly overcomplicated) way I see it is this. Let the central coin have radius ##R## and the orbiting coin have radius ##r##...

I can't answer your question as I don't know much about this myself. However as far as I know, this is Einstein's second postulate for...

I know this wasn't the topic of the post, but what if this action-reaction pair is not a conservative force?

Haven't read it but for the benefit of the potential viewer, I found this...

First of all I thank both you and @Dale; the answers are really satisfying to read. My takeaway from yours (in the first case) is that...

I assume that by system you mean the two component system of Earth + object. In that case, the total energy of the system is...

It is more that net work is different from total work. The net work is the net force times the displacement of the center of mass...

I was sort of suspecting this. So one can say, the energy getting stored in a system is equal to the energy flowing in; some of this...

Suppose somehow an object is moving upwards with a speed ##v##, at this point I start applying a force ##F## that is equal to its...

On the first attempt I used conservation of energy to get it down to a single equation involving theta and v (the speed when the angle...

Sorry it was late at night and I didn't expand on it. I've thought about it a bit more and it comes down to this: You can move around...