Picture the situation where a ball is attached to the end of a string. By whirling the ball with the string, you can make it move around in a horizontal circle at constant speed. (a) What is the net vertical force on the ball? Sketch a free-body diagram of the forces acting on the ball for some point in its circular orbit. (b) What must be the direction of the ball’s acceleration to keep it moving in a horizontal circle? (c) From your free-body diagram in part (a), determine the net force acting on the ball. Does this agree with part (b)?

Picture the situation where a ball is attached to the end of a string. By whirling the ball with the string, you can make it move around in a horizontal circle at constant speed. (a) What is the net vertical force on the ball? Sketch a free-body diagram of the forces acting on the ball for some point in its circular orbit. (b) What must be the direction of the ball’s acceleration to keep it moving in a horizontal circle? (c) From your free-body diagram in part (a), determine the net force acting on the ball. Does this agree with part (b)?

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter11: Gravity, Planetary Orbits, And The Hydrogen Atom

Section: Chapter Questions

Problem 2OQ: The gravitational force exerted on an astronaut on the Earths surface is 650 N directed downward....

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