Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 12, Problem 5EP
The previous strategy to calculate Wf was based on the definition of work (force-distance method). The work done by friction for this experimental setup can also be obtained by an energy method. Note in ● GL Fig. 12.1 that there is a decrease in potential energy of the descending mass (ΔUw) and an increase in the potential energy of the cart (ΔUc). Are these changes in potential energy equal in magnitude?
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Chapter 12 Solutions
Physics Laboratory Experiments
Ch. 12 - Prob. 1EPCh. 12 - If the mass of the connecting string is small...Ch. 12 - Now consider the case of the car moving down the...Ch. 12 - Examine your equations for f, and determine what...Ch. 12 - The previous strategy to calculate Wf was based on...Ch. 12 - Since a nonconservative force is present (f), some...Ch. 12 - Distinguish between the conservation of mechanical...Ch. 12 - Is mechanical energy conserved in real situations?...Ch. 12 - Discuss the relationship between work and energy...Ch. 12 - Under what conditions would the frictional forces...
Ch. 12 - Is the force of friction the same for different...Ch. 12 - What are possible sources of error in this...Ch. 12 - What was the work done by the suspended weight...Ch. 12 - What was the work done by gravity acting on the...Ch. 12 - (a) For the car going up the incline, what...Ch. 12 - Suppose the car accelerated up and down the...Ch. 12 - Is the assumption justified that f would be the...Ch. 12 - Assuming that f = N (see Experiment 11), show that...
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