Understanding 3D Rigid Body Dynamics Equations: R=R'Ω Explained

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SUMMARY

The equation R=R'Ω represents a relationship in 3D rigid body dynamics, where R denotes the position vector, R' indicates its derivative, and Ω signifies angular velocity. This equation is crucial for understanding motion in various coordinate systems. The discussion highlights the ambiguity surrounding the equation without proper context, emphasizing the need to refer to specific course materials for clarity. A resource from a professor's course outline is suggested for further exploration of vector equations of motion across different coordinate systems.

PREREQUISITES
  • Understanding of 3D rigid body dynamics
  • Familiarity with rotation matrices
  • Knowledge of angular velocity concepts
  • Basic proficiency in vector calculus
NEXT STEPS
  • Review the course outline on vector equations of motion from the provided link
  • Study the application of rotation matrices in 3D dynamics
  • Learn about the derivation and implications of angular velocity in rigid body motion
  • Explore different coordinate systems used in dynamics analysis
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Students and professionals in mechanical engineering, physics, and robotics who are studying or working with 3D rigid body dynamics and motion analysis.

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Homework Statement



I just saw the equation R=R'Ω (where ' is dot, or the derivative) in my notes (unorganized obviously), and can't remember what it stands for (rotation matrices?).
Can somebody please tell me what this equations means thanks. I know R is some position vector and Ω is the angular velocity, but I don't get what this equation is saying. Thanks.

Homework Equations





The Attempt at a Solution

 
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That seems a little ambiguous without context. Equations of motion are different depending on different coordinate systems used. R=\dot{R}Ω doesn't look familiar to me at all for any coordinate system. Perhaps take a look at one of my professor's course outline pages and see if you can identify what you are talking about possibly. This page from my old professor's website list the vector equations of motion in four different coordinate systems: http://www.csupomona.edu/~padashner/316/GCO/C.Outline-2.pdf

Hope that helps!
 

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