Help finding mass moment of inertia

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SUMMARY

The discussion focuses on calculating the mass moment of inertia using a reference point, specifically point E. The key method outlined involves determining the moment of inertia for two pieces of the same material shaped like the holes and subtracting this from the moment of inertia of the entire plate without holes. This additive property of moment of inertia is crucial for accurate calculations.

PREREQUISITES
  • Understanding of mass moment of inertia
  • Familiarity with additive properties in physics
  • Basic knowledge of geometry related to shapes and holes
  • Ability to work with reference points in calculations
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master117
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It must be for any value of the distances (work with letters only), Every distance is known, mass is also known I just can't figure out how to do it if anyone can help me I would really apreciate it. Take also in consideration that we must use point E as the reference

Here is the image, in case you can't see it, is also attached
29aqp78.jpg
 

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welcome to pf!

hi master117! welcome to pf! :smile:

moment of inertia is additive, so find the moment of inertia of two pieces of the same material, with the shape of the holes, then subtract that from the moment of inertia of the plate as if it had no holes :wink:
 

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