Final answer:
The relationship between net force and displacement from equilibrium is described by Hooke's Law, which states that the restoring force is directly proportional to displacement and acts in the opposite direction.
Step-by-step explanation:
The relationship between the net force and the displacement from equilibrium is described by Hooke's Law, which can be represented by the equation F = -kx, where F represents the restoring force, k is the force constant, and x is the displacement from equilibrium. Hooke's Law states that the restoring force is directly proportional to the displacement and acts in the opposite direction, which means that as an object is displaced from its equilibrium position, the force attempting to return it to equilibrium increases proportionally.
Moreover, Hooke's Law is crucial for understanding simple harmonic motion where this proportional relationship results in periodic motion. The minus sign in the equation indicates that the direction of the force is opposite to the direction of displacement, following the rule that the system tends to return to equilibrium.