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In previous studies the dynamics of the relativistic particle moving alongthe rotating pipe was investigated. The simple gedanken experiment wasconsidered. It was shown that at large enough velocities a centrifugal forceacting on the bead changes its usual sign and attracts towards the rotationaxis. The authors studied motion of the particle along the rotating straightpipe in the frame of the observer located in the center of rotation, alsodynamics of centrifugally accelerated relativistic particle was studied in thelaboratory frame. In the both cases it was shown that centrifugal force changessign. Recently the problem was studied in the frame of stationary observers. Itwas argued that centrifugal acceleration reversal is not frame invarianteffect. In the present paper we consider motion of particle along the rotatingstraight line in the frame of an arbitrary stationary observer located atcertain distance form the center of rotation and rigidly rotating with constantangular velocity. It is shown that any stationary observer could detectreversal of centrifugal acceleration.

Centrifugal force reversal from the perspective of rigidly rotating observer