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Mr__Teal t1_iu4uowv wrote

Reply to comment by mustangwallflower in If I have two identical rare earth magnets and put them together, is the power of the combined magnets doubled? What about 3 or 4 magnets (tripled? quadrupled?)? by asdfredditusername

10 1mm thick magnets stacked would have more total strength than 2 5mm magnets if each magnet is the same strength, yes. However all else being equal (same diameter, composition, etc) the 5mm thickness magnets would tend to be stronger than the 1mm thick magnets. In practice the two stacks would have similar strength if they were the same material and the same diameter.

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mustangwallflower t1_iu5vf5j wrote

So, let's make this more clear:

  • a stack of 10 x 1mm thick magnets with a pull strength of 1kg each
  • a stack of 2 x 5mm thick magnets with a pull strength of 5kg each

Would the resulting magnetic force at the end of each stack be the same: 10kg? (give or take a little)

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ukezi t1_iuh5a24 wrote

They would basically have the same strength. In reality rare earth magnets have a protective layer on the outside to prevent oxidation so I would expect the stack of thick magnets to be slightly stronger.

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