(Solved): Determine the moment of each of the three forces about point A. ...

Expert Answer

---

F1 = 250N
Moment by 250 N force about A
Force A has two component
in x direction = F1x =250 sin(30) = 125N
in y direction = F1y = 250 cos(30) = 216.506N
So total moment about A by F1
Taking clockwise as positive



clockwise


To calculate the moment of a force at a point, you need to consider both the magnitude of the force and the perpendicular distance from the point to the line of action of the force.