The diagram above represents the graph of the f... - JAMB Physics 2009 Question

The diagram above represents the graph of the force F applied in stretching a spiral spring against the corresponding extension (X). The force constant of the spring is

A

20 Nm^-1

B

40 Nm^-1

C

30 Nm^-1

D

10 Nm^-1

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Correct Option: A

F = Ke (Hooks law)

K = ^F/_e = ⁸⁰/₄

= 20 Nm^-1

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