Distinctive feature of the Behaviour of Nonconservative System Oscillation Frequencies with the First-Order Interaction of Degrees of Freedom

It is shown that the theorems formulated for conservative systems couldn't hold true for nonconservative systems under standard operating conditions far from the boundaries of instability. It is necessary to carry out a more profound research of these systems. It is demonstrated that in a nonconservative system the natural frequency of the system is growing when the mass increases and it is decreasing when the stiffness reduces.