Verified answer

The maximum net force and the minimum net force on the body are 40N and 0 N.

• The net force acting on a body due to the application of various forces depends upon the magnitude of each force and the direction in which they are acting.
• The magnitude can be found using the property of vector addition, i.e.

                        [tex]F=\sqrt{F_1^2+F_2^2+2F_1F_2cos\alpha }[/tex]

        where [tex]\alpha[/tex] is the angle between two forces.

• The maximum and minimum value of the net force is when [tex]cos\alpha =1[/tex] and [tex]cos\alpha =-1[/tex], i.e. when [tex]\alpha =0^o[/tex] and when [tex]\alpha =90^o[/tex].
• When two forces act in the same direction [tex](\alpha =0^o)[/tex], the forces add up. So the net force will be, 40N
• When two forces act in the opposite direction [tex](\alpha =180^o)[/tex], the forces get canceled out. So the net force will be, 0 N.