Two people pull on a horizontal spring that is attached to an immovable wall. Then, they detach it from the wall and pull on opposite ends of the horizontal spring. They pull just as hard in each case. In which situation, if either, does the spring stretch more? I think that the spring would stretch more when it is attached to the immovable wall because it is immovable and the force being put on the spring is more than the 1 people. I may be wrong though!