College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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A 31.5-cm-long pendulum with a 235-g bob swings through an angle of 180°. Choose the reference configuration as the point where the pendulum string is vertical. (a) Assuming that the pendulum string remains taut, what is the gravitational potential energy of the pendulum bob-Earth system when the pendulum string makes an angle of 90° with the vertical? (b) Assuming that the pendulum string remains taut, what is the gravitational potential energy of the pendulum bob-Earth system when the pendulum string makes an angle of 40.0° with the vertical? (c) What is the gravitational potential energy of the pendulum bob-Earth system at the lowest point of the pendulum's motion?
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Transcribed Image Text:A 31.5-cm-long pendulum with a 235-g bob swings through an angle of 180°. Choose the reference configuration as the point where the pendulum string is vertical. (a) Assuming that the pendulum string remains taut, what is the gravitational potential energy of the pendulum bob-Earth system when the pendulum string makes an angle of 90° with the vertical? (b) Assuming that the pendulum string remains taut, what is the gravitational potential energy of the pendulum bob-Earth system when the pendulum string makes an angle of 40.0° with the vertical? (c) What is the gravitational potential energy of the pendulum bob-Earth system at the lowest point of the pendulum's motion?
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