A method is described for the analytical evaluation of the force acting on a relativistic electron beam
spreading in dense gas plasma by the ohmic plasma channel. This is useful for the solution of the general
definitions for the force of the beam plasma interactions in the case of an arbitrary displacement of the
symmetry axis of the plasma channel relative to the corresponding axis of the beam. The accuracy of
these procedures is tested and their efficiency illustrated with practical applications, including the com-
putation of the tracking force exerting on a relativistic electron beam by the ohmic plasma channel