

A force is fully characterized by its magnitude and direction.

\( \newcommand\): The exact point of application of a force will impact how internal forces (stresses) are distributed, so the principle of transmissibility cannot be applied when examining internal forces. A force is that action/effect which tends to change the state of rest or uniform motion of a body. Case 1: The line of action of the force is perpendicular to aa, and that the two lines do not intersect each other.
