Magnets, strength.

[Phlatiron]

Imagine 2 exact cylindrical neodymium magnets in contact with eachother (magnetized in such a way that the flat ends of the cylinders are in contact). Now imagine 2 different sets of these 2 exact cylindrical neodymium magnets. One of the 2 sets has a diameter twice the size of the other. Both sets (all 4 magnets) are of the same volume.

Which set of magnets, if any, would require more force to pull appart? the 1 diameter magnets, or the 2 diameter magnets?

 

[MiketheEngineer]

2 is bigger than 1 - so I would guess 2 -- TRY IT

 

[DLite30]

Magnets...how the *hell* do they work?





Sorry...I had to.

 

[msquared48]

Actually, magnets are very political in nature.

They are composed of positive and negative Poles and were never admitted to0 the EU.

Mike McCann
MMC Engineering

http://mmcengineering.tripod.com

 

[IRstuff]

It's even worse when they fly; they're not allowed to sit on the starboard side.

TTFN
faq731-376

 

[MagMike]

Attractive force of magnets is dependent on three things: magnetic field, gradient of the magnetic field and the area.

You increased the area on the 2x magnet set, but you have shorter magnets because the volume has to stay the same. Shorter magnets produce less magnetic than longer magnets.

Since delta-Area and delta-Field is roughly the same they would have roughly the same holding force.

 

[tygerdawg]

It's even worse when they fly; they're not allowed to sit on the starboard side.

Love a Kuo-esque inside joke. But I thought instability lurks on the LHS. Either way, it still tickles me.

TygerDawg
Blue Technik LLC
Virtuoso Robotics Engineering

http://www.bluetechnik.com

 

[IRstuff]

That's because of the RPN...

TTFN
faq731-376

 

[Walterke]

http://en.wikipedia.org/wiki/Magnet#Force_between_two_cylindrical_magnets

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