[[184_notes:three_principles|Next Page: 3 Fundamental Principles of Mechanics]]
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/*[[184_notes:three_principles|Next Page: 3 Fundamental Principles of Mechanics]]
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[[184_notes:math_review|Previous Page: Math Review]]
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===== Defining A System =====
===== Defining A System =====
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When we refer to a quantity as "internal," we are referring to something that is //inside// the system we chose.
When we refer to a quantity as "internal," we are referring to something that is //inside// the system we chose.
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[{{ 184_notes:syssurr.png?250|This figure shows a system and its physical quantities (charge (q), mass, momentum (p), etc.) as well as the ways the surroundings can influence the system (force, heat, }}]
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[{{ 184_notes:syssurr.png?250|This figure shows a system and its physical quantities (charge (q), mass, momentum (p), etc.) as well as the ways the surroundings can influence the system (force, heat, torque, etc.).}}]