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| 183_notes:energy_cons [2021/03/12 02:40] – [The Total Energy of a System Can Change] stumptyl | 183_notes:energy_cons [2021/05/25 15:52] – [Defining systems] stumptyl |
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| ==== Defining systems ==== | ==== Defining systems ==== |
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| In your work with the [[183_notes:define_energy|energy principle]], it is critical that the system be defined. Defining a system is not sleight of hand or a clever accounting trick, it's a fundamental aspect of predicting and explaining motion. The systems that you have defined thus far have been single-particle systems, but now you will learn to work with multi-particle systems. Which particles are chosen as part of the system often dictates what predictions can be made and what motion can be explained. | In your work with the [[183_notes:define_energy|energy principle]], it is critical that the system be defined. Defining a system is not sleight of hand or a clever accounting trick, it's a fundamental aspect of predicting and explaining motion. The systems that you have defined thus far have been single-particle systems, but now you will learn to work with multi-particle systems. Which particles are chosen as part of the system often dictates what predictions can be made and what motion can be explained? |
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| In applying energy conservation to different systems, it can be challenging to keep track of all the important elements. You will need to be systematic, and the following 3 steps will help: | In applying energy conservation to different systems, it can be challenging to keep track of all the important elements. You will need to be systematic, and the following 3 steps will help: |