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Case More

Case More
Case More
Physics: in which case does the spring stretch more?

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?

(a)when not attached to the wall
(b)the spring stretches the same in both cases
(c)when attached to the wall

c) stretches more when attached to the wall.

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