Using Tracker as Augmented Reality Tool in Teaching Real Oscillator Model in Physics

Tracker is one of the applications recommended by its capabilities as typical AR - augmented reality tool, which otherwise has been extensively used in the last years at all levels of teaching physics. The software has an optical tracking system based on Java and a flexible data tool analysis, specially designed for physics experimental activities. The paper presents a simple approach of teaching the aspects concerning the oscillatory movement of a gravitational pendulum for big initial angular amplitudes using Tracker. The analysis of the movement of the gravitational pendulum with initial big initial angular amplitudes requires advanced data fitting software, in order to integrate the movement equation and find the expression of the time-and-angle dependence of the period T. Using the capabilities of Tracker, it is possible that using real data to prove the non isochrone characteristic of the phenomenon. They also allow to make an in-depth analysis of the real oscillator in an intuitively and adequate approach of teaching the topic to high school students.