  The requirements imposed by relativistic covariance on the physical
description of two interacting classical charged particles are investigated.
Because rotational pseudo-forces cannot be caused by Thomas precession,
kinematical considerations demand the presence of compensatory forces when
Thomas precession of an inertial reference frame is observed. The magnetic
force on a moving charge is apparently one such force, where Thomas precession
of the laboratory frame is seen by an observer co-moving with the charge. Other
forces corresponding to the Euler and centrifugal rotational pseudo-forces are
also predicted by this line of reasoning. The plausibility that an
anti-centrifugal force of the Thomas precession may account for the binding of
quarks into nucleons is investigated. The similarity of the magnetic force on a
relativistically-moving charge in the radiative magnetic field of a nearby
Coulomb-accelerating charge to the predicted anti-centrifugal force of the
Thomas precession is shown.
