Question: You hold a bucket in one hand. In the bucket is a 510g rock. You swing the bucket so the rock moves in a vertical circle 2.9m in diameter.
Part I: What is the minimum speed the rock must have at the top of the circle if it is to always stay in contact with the bottom of the bucket?
I need help to determine the minimum speed the rock must have at the top of the circle and express your answer to two significant figures and include the appropriate units.