Problem F4-12 Statics Hibbeler 12th (Chapter 4)

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If F1 = {100i - 120j + 75k} lb and F2 = {-200i + 250j + 100k} lb, determine the resultant moment produced by these forces about point O. Express the result as a cartesian vector.
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Could you have also found the moments about point A due to each force and then add them? So would do (rxF1)+(rxF2)

ericparviainen