8. Centripetal Forces & Gravitation
Vertical Centripetal Forces
6:07 minutes
Problem 8f
Textbook Question
Textbook QuestionA 500 g ball moves in a vertical circle on a 102-cm-long string. If the speed at the top is 4.0 m/s, then the speed at the bottom will be 7.5 m/s. (You'll learn how to show this in Chapter 10.) (a) What is the gravitational force acting on the ball?
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