Paper ID S001 : Attractive force of magnets and magnetic fields — Strength and range of impact by the attractive force of magnets

Although the energy of the magnetic field of the magnet should be proportional to its volume, the results showed that the attractive force was not proportional to the total volume of magnets such as two-tiered or three-tiered magnets. Why is the attractive force not proportional to the magnet volume?

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Thank you for your question. I agree with your comments “the energy of the magnetic field of the magnet should be proportional to its volume”. However, the attractive force is not proportional to the magnet volume, because the magnetic flux density at the magnet surface will be saturated.

Thank you for your response.