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1. A pendulum consists of a weight on the end of a string attached to a fixed pivot. The weight is held at a 90 degree angle before being released. r H a. What is the potential energy of the weight at the moment of release? b. What is the velocity at the bottom of the swing? c. Derive an expression for the work done by gravity on the weight at an arbitrary angle.

1. A pendulum consists of a weight on the end of a string attached to a fixed pivot. The weight is held at a 90 degree angle before being released. r H a. What is the potential energy of the weight at the moment of release? b. What is the velocity at the bottom of the swing? c. Derive an expression for the work done by gravity on the weight at an arbitrary angle.

Principles of Physics: A Calculus-Based Text
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
Chapter6: Energy Of A System
Section6.6: Potential Energy Of A System
Problem 6.7QQ: A ball is connected to a light spring suspended vertically as shown in Figure 6.17. When pulled...
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What is the answer to question 1 c and question 2
1. A pendulum consists of a weight on the end of a string attached to a fixed pivot. The weight is held at a 90 degree angle before being released. V r I a. What is the potential energy of the weight at the moment of release? b. What is the velocity at the bottom of the swing? c. Derive an expression for the work done by gravity on the weight at an arbitrary angle. 2. Two identical masses are on a frictionless table. One mass is accelerated by a 10 N force over a distance of 1 m. The second mass is accelerated in the same direction by a 5 N force over a distance of 2 m. Which of the following statements is false? A: The work done on both masses is the same. B: The final velocity of both masses is the same. C: The acceleration of both masses is the same. D: The time taken for the second mass to reach top speed is double that taken by mass one
Transcribed Image Text:1. A pendulum consists of a weight on the end of a string attached to a fixed pivot. The weight is held at a 90 degree angle before being released. V r I a. What is the potential energy of the weight at the moment of release? b. What is the velocity at the bottom of the swing? c. Derive an expression for the work done by gravity on the weight at an arbitrary angle. 2. Two identical masses are on a frictionless table. One mass is accelerated by a 10 N force over a distance of 1 m. The second mass is accelerated in the same direction by a 5 N force over a distance of 2 m. Which of the following statements is false? A: The work done on both masses is the same. B: The final velocity of both masses is the same. C: The acceleration of both masses is the same. D: The time taken for the second mass to reach top speed is double that taken by mass one
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