$\begin{array}{1 1}(1) L \bigg( 1+ \large\frac{2}{9} \frac{Mg}{\pi YR^2} \bigg) \\ (2) L \bigg( 1+ \large\frac{1}{3} \frac{Mg}{\pi YR^2} \bigg) \\ (3) L \bigg( 1+ \large\frac{1}{9} \frac{Mg}{\pi YR^2} \bigg) \\ (4) L \bigg( 1+ \large\frac{2}{3} \frac{Mg}{\pi YR^2} \bigg) \end{array} $