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AA1640054002.pdf744.57 kB
Other TitleA Note on Top Spin
Author(jpn)森下, 悦生
Author(eng)Morishita, Etsuo
Author Affiliation(jpn)芝浦工業大学 : 東京大学
Author Affiliation(eng)Shibaura Institute of Technology : The University of Tokyo
Issue Date2016-03-31
Shibaura Institute of Technology
Publication title芝浦工業大学研究報告: 理工系編. 人文系編
The research reports of Shibaura Institute of Technology: Natural sciences and engineering. Social sciences and humanities
Start page25
End page32
Publication date2016-03-31
AbstractWe sometimes have difficulties to understand the reason why an ideal top never topples. Physicist might explain that angular momentum conserves. Students could not imagine the fact that a top spins continuously because angular momentum is constant. A pole stands still when pulled radially by many ropes, and no one doubts this. This is also the case for a top spin. Centrifugal and centripetal forces appear instead of the rope tension. In this short note, we first would like to introduce this pole-rope analogy for a spinning top. Secondary, we show that precession can be explained by several concepts. One is Eulerian and another is Feymanian. The last one is Newtonian. Euler's and Feyman's interpretations both base on the conservation of angular momentum. Newtonian approach shows that actually Coriolis' force play an important role for mischievous gyro moment.
Description形態: CD-ROM1枚
形態: 図版あり
Note: One CD-ROM
Physical characteristics: Original contains illustrations
Keywordsrigid body; Euler equation; spin; top
Document TypeDepartmental Bulletin Paper
NASA Subject CategoryPhysics (General)

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