Demonstrating Why Water Stays in a Bucket Revolving in a Vertical Circle

The video explores why water stays in a bucket when it is swung in a vertical circle. Initially, it demonstrates that water falls out of an upside-down bucket due to gravity. However, when the bucket is swung, the water remains inside due to inertia, which is the tendency of the water to maintain its state of motion. The video explains that if the water's speed is sufficient, its projectile motion's arc is larger than the bucket's circular path, keeping the water inside. The key takeaway is that inertia, not centripetal force, is responsible for the water staying in the bucket.

How does the inertia of the water affect its motion when the bucket is revolving?

What happens to the water if the bucket and water are not moving fast enough?