Rigid Body Dynamics - Stability About Principal Axes - Qualitative Analysis of Spinning Objects

Rigid Body Dynamics - Stability About Principal Axes - Qualitative Analysis of Spinning Objects

Ross Dynamics Lab via YouTube Direct link

Why can't we always get pure (steady) rotation about an axis for a free rigid body? Mystery of free rigid body dynamics can be understood by considering internal moments.

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5 of 6

Why can't we always get pure (steady) rotation about an axis for a free rigid body? Mystery of free rigid body dynamics can be understood by considering internal moments.

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Rigid Body Dynamics - Stability About Principal Axes - Qualitative Analysis of Spinning Objects

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  1. 1 )
  2. 2 A demonstration of yaw-pitch-roll from the built-in gyroscope of an iPad
  3. 3 Free rigid body. First, the stability of the motion for a torque-free rigid body, that is a rigid body which can be approximated as having no external moments on it. We try to give an intuitive expl…
  4. 4 rotation about the intermediate axis is unstable
  5. 5 Why can't we always get pure (steady) rotation about an axis for a free rigid body? Mystery of free rigid body dynamics can be understood by considering internal moments.
  6. 6 Qualitative analysis of spinning objects. We discuss the qualitative analysis of a spinning body, where the body is either spinning rapidly or is a system with a connected rapidly spinning rotor. Th…

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