“…Usually, there is no certain value of the speed at which a nonlinear jump occurs, since when the movement accelerates, the jump occurs at a speed above the critical speed, when the movement slows down – below the critical speed. Resonant capture and missing operating speeds are typical features associated with the Sommerfeld effect [ [24] , [25] , [26] , [32] , [33] , [34] , [35] , [36] , [37] , [38] ].…”