Which of the following pairs of forces cannot be added to give a resultant force of 4N?

An object is acted upon by a 3 N force and by a 4 N force. Each diagram shows the two forces.Which diagram also shows the resultant X of these two forces?

Which one of the following statements describes the resultant of two forces?

The sum of magnitudes of two forces is 16 N. If the resultant force is 8 N and its direction is perpendicular tothe smaller force then the two forces are"

Two forces 3 N and 2 N are at angle  such that theresultant is R. The first force is now increased to 6N and the resultant become 2R. The value of  is

What is not a necessary requirement of the forces in a couple?A They act in opposite directions.B They act along different lines.C They have the same magnitude.D They produce a resultant force.