what is the x in hooke's law?
athematically, Hooke's law states that F=-kx, where x is the displacement of the spring's end from its equilibrium position (a distance, in SI units: meters); F is the restoring force exerted by the spring on that end (in SI units: N or kgÂ·m/s2); and k is a constant called the rate or spring constant (in SI units: N/m or kg/s2).