Finding center of gravity

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Finding center of gravity

ginghis
Is there a way for libreCAD to find the center of gravity of a part if it knows all the dimensions?
Is this a viable route of development?
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Re: Finding center of gravity

dxli
Since LibreCAD focuses on 2d, a reasonable cog is also limited to 2d.

ginghis wrote
Is there a way for libreCAD to find the center of gravity of a part if it knows all the dimensions?
Is this a viable route of development?
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Re: Finding center of gravity

ginghis
In the case of 2D it would be second moment of area instead of center of gravity. Multiplying by thickness and density gives weight which is centered at the center of second moment of the area.
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Re: Finding center of gravity

dxli
In LibreCAD v3, 2d integrals are estimated to find the area

In LibreCAD v2, the area is found by contour integrals.

While it's straightforward to consider a local weight function to get various physical functions, it's not really what we are focusing on. Any help is welcome though

ginghis wrote
In the case of 2D it would be second moment of area instead of center of gravity. Multiplying by thickness and density gives weight which is centered at the center of second moment of the area.