An analytical approach is presented to obtain the sloshing natural frequencies and modes of ideal liquid in a rigid cylindrical container with a rigid annular baffle. The free surface waves of the liquid are considered in the analysis. The artificial interfaces are introduced to divide the complicated liquid domain into several simple sub-domains. https://www.hindigyanvishv.com/best-flash-CoQ-Clear-100-Ubiquinol-60-Softgels-Citrus-deal-zone/