Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Textbook Question
Chapter 3, Problem 99E
At what point in its motion is the KE of a pendulum bob at a maximum? At what point is its PE at a maximum? When its KE is at half its maximum value, how much PE does it possess?
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The figure shows a pendulum of length L = 1.6 m. Its bob (which effectively has all the mass) has speed vo when the cord makes an angle
0o = 50° with the vertical. (a) What is the speed of the bob when it is in its lowest position if vo = 5.1 m/s? What is the least value that vo
can have if the pendulum is to swing down and then up (b) to a horizontal position, and (c) to a vertical position with the cord remaining
straight? (d) Do the answers to (b) and (c) increase, decrease, or remain the same if is increased by a few degrees?
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The figure shows a pendulum of length L - 1.7 m. Its bob (which effectively has all the mass) has speed vo when the cord makes an angle
8-35° with the vertical. (a) What is the speed of the bob when it is in its lowest position if vo-9.4 m/s? What is the least value that vo
can have if the pendulum is to swing down and then up (b) to a horizontal position, and (c) to a vertical position with the cord remaining
straight? (d) Do the answers to (b) and (c) increase, decrease, or remain the same if 8 is increased by a few degrees?
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The figure shows a pendulum of length L = 1.7 m. Its bob (which effectively has all the mass) has speed vo when the cord makes an angle
Oo = 32° with the vertical. (a) What is the speed of the bob when it is in its lowest position if vo = 8.8 m/s? What is the least value that vo
can have if the pendulum is to swing down and then up (b) to a horizontal position, and (c) to a vertical position with the cord remaining
straight? (d) Do the answers to (b) and (c) increase, decrease, or remain the same if 6o is increased by a few degrees?
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Chapter 3 Solutions
Conceptual Physical Science (6th Edition)
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