The net force acting on the body is given as,
[tex]F_{net}=\lvert F_1+F_2\rvert[/tex]
For the first diagram:
The net force is given as,
[tex]\begin{gathered} F_{net}=\lvert(11\text{ N})+(-71\text{ N})\rvert \\ =60\text{ N} \end{gathered}[/tex]
For the second diagram:
The net force is given as,
[tex]\begin{gathered} F_{net}=\lvert(405\text{ N})-(403\text{ N})\rvert \\ =2\text{ N} \end{gathered}[/tex]
For the third diagram:
The net force is given as,
[tex]\begin{gathered} F_{net}=\lvert(227\text{ N})-(190\text{ N})\rvert \\ =37\text{ N} \end{gathered}[/tex]
For the fourth diagram:
The net force is given as,
[tex]\begin{gathered} F_{net}=\lvert(22.7\text{ N})-(15.3\text{ N})\rvert \\ =7.4\text{N} \end{gathered}[/tex]
On comparing different values of the net force on the different systems, it is found that the net force is maximum in the first diagram.
