Moments and couples2D
Couple moment
Explore force moments, Varignon’s theorem, pure couples, equivalent force-couple systems, and spatial axis moments.
Open the complete lessonEngineering simulation studio
Purpose-built 2D FBDCouple-moment explorer
Rotate the force pair and separation vector to see the signed free-vector couple.
equal-opposite pairfree-vector couplezero resultant
Engineering model scope
Category
Moments and couples
Idealization
Forces act on a rigid body and moments follow the displayed right-hand sign convention.
Acceptance check
Compare direct and component moments or project r × F onto the selected axis.