\(F - f = Ma\)

અને ચકગતી \(\tau \,\, = \,\,\,I\alpha \,\,\)

\(\Rightarrow \,\,\,f.R.\,\, = \,\,\frac{2}{5}\,\,M{R^2}\,.\,\,\frac{a}{R}\,\)

\(\, \Rightarrow \,\,{f}\, = \,\,\frac{2}{5}\,\,Ma\)

\(\therefore \,\,\,F - f\,\, = \,\frac{5}{2}\,\,f\,\,or\,\,F\,\, = \,\,\frac{7}{2}\,\,f\,\,\,\,\because \,\,\,f\,\, \leqslant \,\,\,\mu \,Mg\,\,\,\) તેથી \(\,F \,\, \leqslant \,\,\frac{7}{2}\,\,\mu \,Mg\)