Weight and Weightlessness |
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Written by supaktra
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Monday, 19 March 2012 13:13 |
ที่มา : www.youtube.com Upload by MIT
This lecture explores weight, perceived gravity, weightlessness, free fall, and zero perceived gravity in orbit. An object is swirled around on a string in a vertical plane. The tension in the string is evaluated when the object is at the top and when it is at the bottom of its circular trajectory.
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Last Updated on Tuesday, 27 March 2012 16:15 |