Magnets, Friction, and Lever question.
Magnets, Friction, and Lever question.
(OP)
So I am designing a device, and it utilizes two magnets to hold two simple rectangular pieces togethe side by side. One of the sides will be perfectly verticle to hold the other piece which will be a lever, similar to a see-saw. I want to be able to hold position, either horizontally, vertically, or anywhere in between.
I want one side of the lever to be the handle, so it will be shorter. Obviously, each side of the lever will be different weights. Will this mean the lever won't hold place when it's not being held up? Is there not enough friction?
Any solutions? Attached is to help you guys comprehend what I'm trying to say through words. Thanks!
I want one side of the lever to be the handle, so it will be shorter. Obviously, each side of the lever will be different weights. Will this mean the lever won't hold place when it's not being held up? Is there not enough friction?
Any solutions? Attached is to help you guys comprehend what I'm trying to say through words. Thanks!





RE: Magnets, Friction, and Lever question.
Depending on the weight and moment of your arm it might work, it might not, but you should be bale to work out the worst case (horizontal) fairly easily.
I'm very glad you added the sketch though - I wouldn't have come up with that from the words...
If your dimensions are reasonably to scale, your lever had better be quite light as it doesn't look right to me.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Magnets, Friction, and Lever question.
Any ideas on how to increase friction at the joint just incase it doesn't work out?
RE: Magnets, Friction, and Lever question.
Quando Omni Flunkus Moritati
RE: Magnets, Friction, and Lever question.
The rest of this problem once all your loading is defined becomes a simple static analysis. The horizontal position will have the highest moment by the looks of your diagram. Assuming there is no end loading.
RE: Magnets, Friction, and Lever question.
Quando Omni Flunkus Moritati
RE: Magnets, Friction, and Lever question.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Magnets, Friction, and Lever question.
RE: Magnets, Friction, and Lever question.
RE: Magnets, Friction, and Lever question.
My motto: Learn something new every day
Also: There's usually a good reason why everyone does it that way
RE: Magnets, Friction, and Lever question.
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RE: Magnets, Friction, and Lever question.
RE: Magnets, Friction, and Lever question.
A.
RE: Magnets, Friction, and Lever question.
Wikipedia has formulae about forces due to magnetic field. Not knowing the shape of the magnets, remember that a dipole represents a N-S arrangement between opposite magnets so if you have two round magnets on opposite ends, you would have two dipoles. Also permeability of the material between magnets will have to be researched. The title of the link is Force between magnets - Wikipedia at en.wikipedia.org/wiki/Force_between_magnets
RE: Magnets, Friction, and Lever question.
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