If you swing a bucket of water fast enough in a vertical circle,at the highest point the water does not spill out.This happens because an outward force balances the pull of Earth on the water.

Question

Quizplus · Accepted Answer

At the highest point of the swing, the water does not spill out due to the centripetal force acting towards the center of the circle, which in this case is provided by the tension in the bucket handle and gravity, not an outward force. The water remains in the bucket because the required centripetal force is less than or equal to the gravitational force acting on the water.

If You Swing a Bucket of Water Fast Enough in a Vertical