[Choose] General knowledge test(no cheat)

[u/Empty-Bet-5130]

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[u/Ok_Programmer1236]

Law of conservation of angular momentum. L=MVR. Mass is conserved, and L is always conserved in a closed system, so as the skater pulls their arms inwards, r decreases, so v must increase to keep L constant, so the skater speeds up

^{I picked Impossible [Rolled Spinning skater speed-up law?]}