A 34.5-cm-long pendulum with a 280-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 42.0° 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?

College Physics
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Chapter1: Units, Trigonometry. And Vectors
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A 34.5-cm-long pendulum with a 280-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 42.0° 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?
Transcribed Image Text:A 34.5-cm-long pendulum with a 280-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 42.0° 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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