A force F is continually acting on the end of a solid rod at a pivot point A (see image below). The object causing that continual 'Force F' is attached to pivot point A and constrained to only move in the line of direction shown.
What forces are causing the center of mass (COM) to move in line with the tail end of the force vector F?
I understand that one can assume a ‘moment of a couple’ will be created about the COM, but couples do not physically move the COM. If that is the case, then is it force F causing the COM to move up and to the left?
But how can that be possible because there is no vertical force component for F?