For example, the Systeme Internationale d'Unites has renamed the basic unit of force, the kilogram-meter per square second (that is, the force used to give a mass of one kilogram an acceleration of one second per second) as the "newton."

A balance wheel's period of oscillation T in seconds, the time required for one complete cycle (two beats), is determined by the wheel's moment of inertia I in kilogram-meter and the stiffness (spring constant) of its balance spring κ in newton-meters per radian: