Spherical neodymium magnets are popular as desk toys as they can be arranged into all kinds of different shapes. This Abaqus simulation shows the behavior of two of them rolling towards each other, with conservation of momentum causing rapid spinning when they stick together. 

Edu ​​​​​​​3DEXPERIENCE ​​​​​​​SIMULIA ​​​​​​​Simulation ​​​​​​​Abaqus ​​​​​​​

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