electromagnetism - Physics of donut magnets levitating vertically

When you put identical donut magnets on a pencil horizontally, the magnets all repel from each other in a way that creates equal spacing between each magnet. However, spacing is not equal when the

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A bar magnet with the north pole facing down is dropped above a conducting ring. Which one of the following is true about the magnet's acceleration as it passes through the ring? (

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Physics Behind the Levitron

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