How I am supposed to explain why with three forces on a force table there is only one equilibrium state. Also I need to explain the reasons for when there are four forces on the force table it is possible to have two equilibrium states. And if it is possible to have more than 2. I think my main problem may be in understanding what exactly an equilibrium state is. I know its the point where all the forces balance out to 0 but I feel like I'm missing something in the definition that is preventing me from solving the problem.