How does a gyroscope keep spinning?

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Tags

1. #constrained
2. #three
3. #gimbals
4. #supports
5. #defines
6. #allow
7. #rotor
8. #single
9. #spinning
10. #perpendicular
11. #which
12. #wheel
13. #about
14. #gyroscope
15. #gimbal
16. #always
17. #rotation
18. #mounted
19. #inner
20. #pivoted