Combining forces

When some forces are acting upon a object, they are being combined. If two people are pushing against an inanimate object, lets say, one person is pushing with 5N and the other 2N. The object they are pushing would be acted upon with 7N. If the two people are against each other, the net force would be going with 3N in the direction of the person pushing with 5N. If two tug-of-war teams are exactly balanced, both will pull as hard as they can but not moth at all. The net force is 0. By using say 28N on both sides will get you nowhere at all. They are completely balanced. If one side was stronger, the object being acted upon would move in that direction. http://www.philbock.com/APphysics/labs/equilibriumlab.pdf