Determination of skin friction on a rotating sphere in magnetic levitation

A simple and inexpensive experimental procedure is proposed to investigate the skin friction caused by air in a rotating sphere. A device using a magnetic field keeps the sphere levitating. The sphere is briefly boosted and begins to rotate, but the air resistance acts in opposition to the motion an...

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Bibliographic Details
Main Authors: C. Cena, L.F.S. Guizado, J.V.B. Ferreira
Format: Article
Language:Portuguese
Published: Sociedade Brasileira de Física 2024-02-01
Series:Revista Brasileira de Ensino de Física
Subjects:
Online Access:http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172024000100406&tlng=en