  The system that consists of a ball bouncing off a sawtooth-shaped table
vibrating vertically is considered. The horizontal motion in this system is
caused by the table shape, and we plotted the mean horizontal velocity as a
function of the asymmetry of the table shape. The ball is transported in the
direction which the gentler slopes face. To give a description to the net
asymmetric transport, we derived a simplified model using assumptions of high
bounce and probabilistic collision to the left or right slopes. The simplified
model exhibits a horizontal transport qualitatively similar to that observed in
the original model.
