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

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Homework Help Overview

The discussion revolves around calculating the moment of inertia for a male individual, specifically one who is 5'10" tall and weighs 165 lbs. Participants explore the complexities involved in determining this physical property, considering factors like body posture and mass distribution.

Discussion Character

  • Exploratory, Assumption checking, Conceptual clarification

Approaches and Questions Raised

  • The original poster attempts to find a straightforward method for calculating moment of inertia but expresses uncertainty about the approach. Some participants suggest considering different body shapes, such as a cylinder or rectangular prism, while questioning the implications of posture on mass distribution.

Discussion Status

The discussion is ongoing, with participants sharing different perspectives on how to model the human body for this calculation. Some guidance has been offered regarding starting assumptions, but no consensus has been reached on the best approach or model to use.

Contextual Notes

Participants note the lack of specific information regarding human body mass distribution and the potential need for biological insights. There is also mention of external resources that might provide additional methods for calculating moment of inertia.

thatsamazing10
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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.
 
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Hello thatsamazing10 :cool:

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? :smile:

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

Regards,

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

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

Now, calculating a lollipop-shape would be cool! :cool:
 
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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
 
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