Asked by Ashley
                How do we compute the moment of inertia matrix of a thin square plate of mass M with sides of size a?
            
            
        Answers
                    Answered by
            oobleck
            
    google moment of inertia
and get lots of examples for various shapes.
    
and get lots of examples for various shapes.
                    Answered by
            Ashley
            
    Hi oobleck, just wanted a clarification on what they've meant here by "moment of inertia matrix".
Thanks!
I only post a question once I've googled and found something which I don't understand :-)
    
Thanks!
I only post a question once I've googled and found something which I don't understand :-)
                    Answered by
            R_scott
            
    the moment of inertia is dependent on the axis of rotation
the plate has different momenta due to its shape
    
the plate has different momenta due to its shape
                    Answered by
            oobleck
            
    my google of "moment of inertia matrix" tuned up half a dozen hits on the first page...
    
                    Answered by
            Damon
            
    You do not say about what axis or if around the center of mass. If not at center of mass and about principal axis then much more difficult (like dynamically unbalanced car wheel) Google inertia tensor .
    
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