Fig. 24.
In a the ski slips broadside on downhill.
In b it gradually revolves as it slips, and would finish by running downhill backwards if its shape did not prevent it from doing so.
In c its rotation is reversed, and it finally runs straight downhill.
In d it runs slightly sideways, but the direction of its course is a straight line.
In e it turns uphill and at a certain point stops.
In f it at first turns and finally runs straight downhill.
The side-slip can be stopped more or less quickly at any stage by the runner strongly edging the ski and at the same time again equalising the distribution of his weight on it.