How Do You Calculate the Moment of Inertia for a 5'10, 165lb Male?

[thatsamazing10]

I am having a lot of trouble trying to find the moment of inertia of myself, a male 5'10", and 165lbs. It seems as if it should be simple but am unsure how to take this one on. Any help would be great thanks.

 

[nazzard]

Hello thatsamazing10

The moment of inertia will certainly depened on the posture (does the person spread his legs/arms?). I'm not sure about the mass distribution in a human body and haven't found a scheme for usual limb masses yet. Maybe the biologists in this forum can help you out with that?

But for an easy start you might assume an even mass distribution along a cylinder before trying to model more difficult postures.

Regards,

nazzard

 

[Office_Shredder]

It's not really a cylinder... I would say it's more of a rectangular prism

 

[nazzard]

It's not really a cylinder... I would say it's more of a rectangular prism

Just had a look in the mirror ... and ... you are right! I do look like a prism!

Now, calculating a lollipop-shape would be cool!

 

[nazzard]

I've found a nice poster which might be helpful. Several methods for determining the moment of inertia along certain axes are discussed.

http://www.univ-valenciennes.fr/congres/3D2006/Posters/Poster%20-%20Damavandi.pdf