Funicular Line Through Three Points 1

Constructing a funicular line through two sets of points, using a trial funicular polygon: The lines of action of the reaction forces of both systems are parallel to the line of action of the respective resultant. Through each trial pole o1 and o2, a line is drawn parallel to the closing string of the corresponding trial funicular polygon, resulting in an intersection point with the line of action of the respective resultant in the force diagram. Through each intersection point, a line is drawn parallel to the closing string of the corresponding system. Their intersection point is the pole o. The force diagram is completed and the funicular line is constructed in the form diagram.