  For the example of an accelerated shell we show that omission of the
energy-momentum tensor (EMT) of the body that causes the acceleration and the
tensions due to this acceleration can lead to a paradoxical result; Namely, the
entrainment of an inertial frame by the accelerated shell in the direction
opposite to that of the acceleration. We consider several models and
demonstrate that the correct result can be obtained only if all components of
the full EMT are adequately taken into account, and the problem statement is
physically correct.
