(a)
(b)


Figure 2.
Forces acting on the skier during turning phase (a). FGROUND (ground reaction) acts eccentrically respect to the skier axis generating MGR (moment) that deforms in particular the lower part of the ski-boot (b). MGR (moment) acting on the ski-boot sole causes sole and sole joint deformation resulting in drift angle that reduces the real value of the ski inclination on the ground (b).