When the motion takes place with a different resistance in the two directions, corresponding
to a mass sliding downhill, as in Fig. 19, the displacement is increased greatly. Although
there is a smooth transition between the value given in Fig. 21 and the greatly increased
value corresponding to completely unsymmetrical resistance, the results approach very rapidly
those corresponding to an infinite resistance in one direction. The results of calculations for
this case are summarized on Fig. 22. A conservative upper bound to the computed values
of displacement is given by the relation