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## Main Question or Discussion Point

I've read a lot and watched a lot about lenz's law , about how a magnet moving towards a solenoid will experience an opposing force. But I tried to search how to calculate this force , found nothing .

So i tried to find how to calculate force between 2 magnets . Found on wikipedia how to calculate force between 2 magnetized areas, 2 cylindrical magnets and 2 dipoles ( very basic , resembling coulombs law). So , which one should i use when calculating force between solenoid and the cylindrical magnet moving towards it ?

So i tried to find how to calculate force between 2 magnets . Found on wikipedia how to calculate force between 2 magnetized areas, 2 cylindrical magnets and 2 dipoles ( very basic , resembling coulombs law). So , which one should i use when calculating force between solenoid and the cylindrical magnet moving towards it ?