The force on the spring is 13.2 N.
The force acting on an elastic material is directly proportional to the extension of the material. This is given by Hooke's law. Mathematically, we can write; Fαe.
Introducing the constant of proportionality k;
F = ke
F = force on the spring
k = force constant
e = extension
Substituting the values we have;
F = 110N/m (0.12m)
F = 13.2 N
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