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[Bruno Chareyre <question659949@xxxxxxxxxxxxxxxxxxxxx>]

Question #659949 on Yade changed:
https://answers.launchpad.net/yade/+question/659949

    Status: Open => Answered

Bruno Chareyre proposed the following answer:
>the sum of the forces of every element in one 2-sphere clump is not the
same as the force got directly from the clump

Correct. The clump members have no inertia by themselves, hence gravitational acceleration does not apply to them. The clump has a weight OTOH.
In fact you should not even think about checking forces on clump members, they are non-dynamic objects.
Bruno

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