Answer:
Option (d)
Step-by-step explanation:
The above mathematical expression for the force F and displacement x is a statement of Hooke's law.
The simplest kind of oscillation occurs when the restoring force F is directly proportional to the displacement x. Systems that obey hooke's law such as an ideal stretched spring with a load attached to it undergo simple harmonic motion. The constant of proportionality is k having the units of N/m and
F = kx
The displacement x is the displacement of the spring from equilibrium position.