Answer to Question #26045 in Mechanics | Relativity for kanyfils

Question

The drawing shows a golf ball passing through a windmill at a miniature golf course. The windmill has 8 blades and rotates at an angular speed of 1.25 rad/s. The opening between successive blades is equal to the width of a blade. A golf ball of diameter 4.50 × 10−2 m is just passing by one of the rotating blades. What must be the minimum speed of the ball so that it will not be hit by the next blade?