Left: 23 N; Right: 23 N; Net force=
[tex]NF = f _{left} - f _{right} = 23 - 23 = 0[/tex]
Left: 10 N; Left: 5 N;. Net force=
[tex]NF = f _{left} - f _{right} = 10 - 5 = 5 \: n[/tex]
Up: 12 N; Down: 20 N;. Net force
[tex]NF \: = f _{up} - f _{down} = 12 - 20 = - 8 \: n[/tex]
Up: 20 N; Down: 20 N;. Net force=
[tex]NF = f _{up} - f _{down} = 20 - 20 = 0[/tex]
Left: 110 N; Up: 43 N; Right: 115 N; Down: 20 N;. Net force =
[tex]NF = f _{left} - f _{right} + (f _{up} - f _{down} )\\ = 110 - 115 + (115 - 20) \\ = - 5 + 95 = 90 \: n \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: [/tex]
