Mystery #2Tier 2forces circular-motion gravity
Why does the water stay in when you swing a bucket in a full circle over your head?
Fill a bucket with water, swing it fast in a big loop, and right at the top the water is directly over your head, upside down. Every part of you expects a cold soaking. But the water stays put. Why does it not pour out onto you?
Your guess
What do you think keeps the water in at the top?
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