EN
A modernised potato ridger, built on the base of the P-447/0 ridger, was an object of the research. In some of its working sections conical springs were used. One of the aims of the research was to obtain information which would make it possible to determine the working resistance of the vibrating ridging body. When the ridger was adequately equipped, a film, with a Panasonic IV video camera, was made during the field examination. The analysis of the film let us determine changes in the position of a special indicator which follows the deflection of the body. This information together with the analysis of the geometry and the active force system, let us determine temporary and mean values of the working resistance of the vibrating ridging body. The work presents results of the analysis of the film which was made at one speed and two depths of the ridger work.