We suggest working with symbols simplifying the

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Unformatted text preview: back down. Consider two possible choices for "system" and "surroundings". Choice 1: The system includes everything in the universe. Choice 2: The system consists of just the ball. All else resides in the surroundings. In parts A ­D, assume Choice 2 for the system and surroundings. A. (5 points) The energy principle is !Esystem = Wexternal + Q . Express all of the terms in the energy principle for this selection of system and surroundings. B. (5 points) List the external objects that interact significantly with the system. Make a carefully...
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This document was uploaded on 03/25/2014 for the course PHYS 172 at Purdue.

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