%0 Journal Article
%T How can acoustic resonance reduce the average velocity in a falling body?
%A Torres-Z¨²£¿iga
%A V.
%J Revista mexicana de f¨ªsica E
%D 2011
%I Sociedad Mexicana de F¨ªsica
%X in this article, a simple experiment is described to overcome the misconception that acoustic pressure and levitation effects are difficult to observe in school laboratories. analysis of the free fall velocity of a toy parachute inside a vertical tube, driven by sound in a range of frequencies aromid the resonant condition, exhibits the resonance frequency, the node pressure zones, and the optimal conditions to obtain acoustical levitation of a light body.
%K resonant tube
%K acoustic pressure
%K high school demonstration.
%U http://www.scielo.org.mx/scielo.php?script=sci_abstract&pid=S1870-35422011000100003&lng=en&nrm=iso&tlng=en