Equivalent Resultant Force and Couple Moment System: reducing a given system down to a single resultant force and a single resultant moment at a specified location Simplest Resultant Force System: reducing a given system down to a single resultant force (with NO couple moment) acting at a specified position Wrench: reducing a given system down to a single resultant force and single couple moment acting along the same line of action Can ALL 2D force and couple moment systems be reduced to a Simplest Resultant Force System? Explain why or why not. Can ALL 3D force and couple moment systems be reduced to a Simplest Resultant Force System at a determined position? Explain why or why not. Can ALL 3D force and couple moment systems be reduced to a wrench? Explain why or why not. A 100 Nm 300 N -0.5 m 0.6 m B 100 N -0.8 m 45 200 N 180 N.m