# Rotational magnetic field

Hello

With a normal magnet, we use energy to position a particle away from the magnet and then the magnet does work and moves it close to the magnet.

Is there any way to have such movement being rotational? Ie to uae energy to move a particle or point clockwise and then the magnet will move it anticlockwise?

SemM
Gold Member
You can place it on a rotating disk.

You can place it on a rotating disk.

What do you mean??

SemM
Gold Member
I am not sure how you describe this system, maybe you should upload a sketch of what you are trying to explain.

berkeman
Mentor
You can place it on a rotating disk.
Like this:

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SemM
SemM
Gold Member
Precisely!

Fantastic image, humor and technology fit well together.

berkeman
berkeman
Mentor
Hello

With a normal magnet, we use energy to position a particle away from the magnet and then the magnet does work and moves it close to the magnet.

Is there any way to have such movement being rotational? Ie to uae energy to move a particle or point clockwise and then the magnet will move it anticlockwise?
There is one system where I can see the slave magnetic dipole rotating under the influence of a master magnetic dipole, but I'm not sure it is a stable system. Can you suggest some of the systems you have been thinking about?

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SemM
There is one system where I can see the slave magnetic dipole rotating under the influence of a master magnetic dipole, but I'm not sure it is a stable system. Can you suggest some of the systems you have been thinking about?

Unfortunately I am only outlining my requirements, I am not aware of any systems.

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SemM
Gold Member
Unfortunately I am only outlining my requirements, I am not aware of any systems.

You can use two rotating pendulums, bound to a ballbearing-tracked ring, where the magnet glides on. one with an inferior radius to the other. But I still don't get your original post. The pendulum like structure rotates about the center, instead of undulating back and forward, and hopefully the magnetic impulse each time they meet through rotating on the rings, they propagate one another to do another revolution.

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anorlunda
Staff Emeritus
Hello

With a normal magnet, we use energy to position a particle away from the magnet and then the magnet does work and moves it close to the magnet.

Is there any way to have such movement being rotational? Ie to uae energy to move a particle or point clockwise and then the magnet will move it anticlockwise?

It sounds like the first few seconds of this video.

This video is even better. It uses a magnet and a compass.

berkeman
lekh2003
Gold Member
I think what he means is that he wants a particle to rotate along a circumference rather than move directly closer to the magnet. If this is the case, I assume you could have a dipole on rotating disc and a counteracting dipole on the opposite side of the particle to make sure the particle follows a circumferential path and doesn't curve into the dipole.

berkeman
Mentor

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