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An innovative method of damping vibrations using a variable mass assembly will be presented in this article. The concept was based on a physical pendulum model consisting of two connected elements. . Mass exchange between the upper and lower member of the pendulum is modeled as a gravity a fluid flow. With the passage of time, the mass of the upper member of pendulum decreases and the mass of the lower member of pendulum increases. It is assumed preserve the mass of the whole system. The article will also present the application possibilities and a review of currently used vibration dampers.