Answer:
Hooke's law, given by
is denoted with a negative sign to regard that the direction of restoring force that occurs opposite in direction of the force that caused the displacement
. F represents the force required to create a spring displacement of
.
Step-by-step explanation:
As with many things in physics, the negative sign represents direction. In this case, after a spring is displaced a distance of
from equilibrium, the restoring force created by the spring will be in opposite direction of the force applied to move the spring there, represented by F.