Figure 2

(a) Graphical illustration of velocity \(f^{\prime}\) against \(M\). (b) Graphical illustration of velocity \(f^{\prime}\) against \(\alpha\). (c) Graphical illustration of velocity \(f^{\prime}\) against \(\phi_{1} = \phi_{2}\). (d) Graphical illustration of velocity \(f^{\prime}\) against \(\Omega\).