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183_notes:l_principle [2021/05/11 19:13] – [Systems That Experience No Net Torque] stumptyl | 183_notes:l_principle [2021/05/11 19:13] – [Systems That Experience No Net Torque] stumptyl | ||
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==== Systems That Experience No Net Torque ==== | ==== Systems That Experience No Net Torque ==== | ||
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For some systems, you might be able to choose a location from which to measure the angular momentum where the system experiences no net torque. For example, in the figure to the right a comet orbits a star. The gravitational force vector points from the comet to the star (red arrow). | For some systems, you might be able to choose a location from which to measure the angular momentum where the system experiences no net torque. For example, in the figure to the right a comet orbits a star. The gravitational force vector points from the comet to the star (red arrow). |