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Multiple inertia matrices

  • #1
1
0

Homework Statement


The object is made out of multiple parts. The inertia matrices of every part are given. Only one part is rotating. How do I find the total inertia matrix.

Homework Equations




The Attempt at a Solution


I thought that I could sum the inertia matrices, after tranforming them to global coordinates.[/B]
 

Answers and Replies

  • #2
2,170
572
Inertia is additive. Mass terms are simply added. Moments of inertia are combined using the parallel axis theorem.
 

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