Final answer:
To determine the resultant of the force and couple system acting on the rectangular solid, we use vector addition.
Step-by-step explanation:
To determine the resultant of the force and couple system acting on the rectangular solid, we can use vector addition.
Vector addition involves adding the forces acting on the object. If the forces are applied in the same direction, the resultant force will be the sum of the applied forces. To determine the resultant of the force and couple system acting on the rectangular solid, we use vector addition.
If the forces are applied in opposite directions, we assign positive and negative signs to the forces and sum them up.
In summary, the correct answer is Vector Addition.