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Homework Statement
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
Homework Equations
F = - kx
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?