  Weak interactions break time-reversal (T) symmetry in the two-state system of
neutral K mesons. We present and discuss a two-state mechanical system, a
Foucault-type pendulum on a rotating table, for a full representation of K0
K0bar transitions by the pendulum motions including T violation. The pendulum
moves with two different oscillation frequencies and two different magnetic
dampings. Its equation of motion is identical with the differential equation
for the real part of the CPT-symmetric K-meson wave function. The pendulum is
able to represent microscopic CP and T violation with CPT symmetry owing to the
macroscopic Coriolis force which breaks the symmetry under reversal-of-motion.
Video clips of the pendulum motions are shown as supplementary material.
