شوفي التعريف يمكن والله اعلم انه هذا
Concurrent forces: are forces that have a constructive influence on another force, meaning that when you add the components of the two forces, the net force is greater than either of the initial forces.
بس انتي تاكدي من الكتاب
معليش هذا اللي قدرت عليه اتمنى اني افدتك . :m22asmilies-com: