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  1. darkenergy

    Mass moment of inertia of an irregular area about its centroid

    I see. thanks a lot. Second option - I have a line horizontally and another vertically, so the area moment of inertia sounds good. nope the axis is not going into the paper... thank yuou so much everybody!
  2. darkenergy

    Mass moment of inertia of an irregular area about its centroid

    hey; thanks sorry - but I'm a dimension out: what about the thickness of the area section?
  3. darkenergy

    Mass moment of inertia of an irregular area about its centroid

    emm okay. so let's say I have a 2D object in AutoCAD. 1) it works out the area moment of inertia for you 2) I multiply this by the depth of the area, giving you the 'volume moment of inertia' 3) multiply this by density giving you the 'mass moment of inertia'? would this work? I'm a...
  4. darkenergy

    Mass moment of inertia of an irregular area about its centroid

    Hi. Please help. I'm struggling to find the mass moment of inertia of an area. Please see picture. I already have the centroid of the area, and the exact area. How would I find the mass moment of inertia of this area about its centroid? I tried using AutoCAD, but it gives you the *area*...

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