Abstract
Circular and rotational motion belongs to basic topics studied at upper secondary school and courses on Mechanics at University. Many studies show problems in understanding basic concepts related to kinematics and dynamics of these motions. In this paper we present a series of inquiry activities aimed at developing the understanding of these concepts and the laws of circular and rotating motion with the effective use of digital technologies. The activity on the videomeasurement of a uniform and decelerating bicycle wheel motion analyses the basic kinematic concepts. In the experiments carried out with the help of a centripetal force apparatus with the rotating system of carriages, the dynamics of circular motion can be investigated by observing and analysing the effect of various parameters on the centripetal force acting on the carriage. In addition to that, a mathematical model for decelerated motion of a bicycle wheel and a carriage can be designed. By manipulating and simulating the model for different parameters the best correspondence with experimental data can be found. The activities can be implemented at confirmation or guided inquiry level. Applying experimental as well as modelling approach to answer research questions students learn how science and physicists work.
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