The components of vector which lies in the plane of the rings, and u and v in system of coordinates 3 are defined by the formulas where unit vectors and of axes and are defined by the appropriate columns of the transformation matrices and . The length of vector is equal to and its components are calculated from the formulas 4.4.2. Reactions of Interaction If there are k points of interaction, then 3k equations of type (4.15) are transformed into constraint equations
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