Abstract

ADMIRAL, Tiago Destéffani. Remote experimental class: determination of restitution coefficient using Arduino. Rev. enseñ. fís. [online]. 2022, vol.34, n.1, pp.81-90. ISSN 0326-7091.  http://dx.doi.org/10.55767/2451.6007.v34.n1.37937.

Among the challenges imposed by the restrictions caused by the covid-19, we can highlight, in particular, the adaptation of experimental activities in the remote mode. This article describes the construction and application of a low-cost experimental prototype, based on the Arduino platform. The prototype was used in a practical class to determine the restitution coefficient in an inelastic collision, between a rubber ball and a wooden surface. The prototype provided real-time data acquisition, in a class with undergraduate physics, enabling the visualization of the phenomenon and data sharing with students. Its operation is based on piezoelectricity, which allowed to graphically observe the proportionality between the kinetic energy in each collision and the intensity of the electrical signal obtained. The experimental results showed low standard deviation and good consistency in several repetitions. They were also com pared with other results, obtained by a technique using video, showing an agreement in the order of 2 %.

Keywords : Restitution coefficient; Arduino; Teaching physics; Remote learning.

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