Electrostatic demonstration of free-fall weightlessness

Autor:	Adrián Corona Cruz, Jasmina Balukovic, Josip Slisko
Rok vydání:	2015
Předmět:	Lift (force) Physics Rest (physics) Classical mechanics Weightlessness law General Physics and Astronomy Mechanics Hydrostatic equilibrium Education law.invention
Zdroj:	Physics Education. 50:288-290
ISSN:	1361-6552 0031-9120
DOI:	10.1088/0031-9120/50/3/288
Popis:	The phenomena of free-fall weightlessness have been demonstrated to students for many years in a number of different ways. The essential basis of all these demonstrations is the fact that in free-falling, gravitationally accelerated systems, the weight force and weight-related forces (for example, friction and hydrostatic forces) disappear. In this article, an original electrostatic demonstration of weightlessness is presented. A charged balloon fixed at the opening of a plastic container cannot lift a light styrofoam sphere sitting on the bottom when the container is at rest. However, while the system is in free-fall, the sphere becomes weightless and the charged balloon is able to lift it electrostatically.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::97f0611c61ca7b4535da959a414e5d00 https://doi.org/10.1088/0031-9120/50/3/288 Zobrazit plný text záznamu