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Magic matchstick

Magic matchstick

You can make a matchstick spinning on two coins without touching it.

00:58

Physics

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Here is what you need, a plastic cup, a matchstick, two coins, a balloon, Balance one coin on the other, Balance the match on the two coins, Place the plastic cup over the setup, Blow up a balloon and tie it off, Rub the balloon on your hair, Move the balloon around the cup, What do you think?, What causes the matchstick to move?
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