The moment is the tendency for a body to rotate about a point or axis when a force is applied on it. Forces applied to a body that do not pass through the centroid create moments; the vector sum of all these moments acting on a body is known as the resultant moment. Consider two tractors pulling the pole to take it down. Here, two forces act on the pole, F1 at point A and F2 at point B. These forces are expressed in the cartesian vector form. These forces act at distances rA and rB from the reference point O. The moment of these forces can be calculated using the cross-product of the force and the perpendicular distance from the reference point. To find the resultant moment, moments M1 and M2 are added and further expressed in the cartesian vector form. Finally, expanding the determinants using the vector cross-product determines the resultant moment acting on the pole as a cartesian vector.