Moment of forces about a segment

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Homework Statement


The bar ABCDE is subjected to three forces: F1 = 75 N and lies along DC, F2 = 50 N and lies along ED, F3 = 40 N and lies along CB. In addition,AB moves 3sqrt2 m on xy plane, BC moves 2 m along y plane, CD moves 1 m along z plane, and DE moves 1 m along x plane. Determine the moment these three forces create about the segment AB. The diagram for this problem is attached to this post. Thanks!


Homework Equations


Cross Product of Vectors
Dot Product of Vectors
Scalar Triple Product of Vectors


The Attempt at a Solution


I'm fairly sure that the problem uses a formula similar to the one used to find the moment about a point, except I'm unsure of how to approach the problem when the moment is supposed to be found about a segment.

Homework Statement





Homework Equations





The Attempt at a Solution

 

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