The physical quantities in the plane of the disk, are defined and calculated such as, the epicyclic frequency, k, the vertical frequency, v, and the circular velocity, [v.
Then, in the section 3, we find the physical quantities in the plane the disk such as circular velocity vc of particles, the epicyclic frequency, k, the vertical frequency, v.
The physical quantities of interest are evaluated in the plane the disk, these are the circular velocity, [[upsilon].
0] > 0, so that the specific angular momentum and circular velocity are positives.
1, we show (a) Circular velocity, (b) Epicyclic frequency.
Also calculed of the physical quantities in plane the disk as circular velocity [v.