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Revista mexicana de física E

Print version ISSN 1870-3542


MOLINA-CORONELL, J.E.  and  RODRIGUEZ-VILLANUEVA, B.P.. Construcción de un generador electromecánico para la enseñanza de ondas en cuerdas, utilizando generador virtual para tablet. Rev. mex. fís. E [online]. 2015, vol.61, n.2, pp.65-68. ISSN 1870-3542.

In this work, it is proposed the construction of a simple electromechanical system with a low cost to produce mechanical waves in ropes for the wave physics applications laboratory. This Device consist in a 5" speaker transformed with a removed cone, a membrane is added and aluminum axes used to tie a rope and a counterweight at the end of the string, to produce stationary waves. In other hand a 10 W amplifier with a TDA2050 integrated circuit to feed the electromechanical system is constructed. As a wave generator, an App of Android for Tablets is used, it is called "Frequency Maker Pro". As a result of the electromechanical oscillator and the Tablet a constant value of the mass per length unit is founded μ corresponding to 1.185 x 10-3 kg/m that is so closed to the average value 1.2 x 10-3 kg/m with an 1.25 % error.

Keywords : Electromechanical generator; electronic wave generator; stationary waves; frecuency maker pro.

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