1. The problem statement, all variables and given/known data 9. A spring has an equilibrium length of 2.0 meters and a spring constant of 10 newtons/meter. Alice is pulling on one end of the spring with a force of 3.0 newtons. Bob is pulling on the opposite end of the spring with a force of 3.0 newtons, in the opposite direction. What is the resulting length of the spring? (A) 1.7 m (B) 2.0 m (C) 2.3 m (D) 2.6 m (E) 8.0 m 2. Relevant equations F = - kx 3. The attempt at a solution I just don't understand why it isn't just 2.6m. From F = 3N and K = 10N/m, We find that x = .3 m, so each person pulls the string .3 m in his/her direction. Why isn't the answer 2.6 then?