About: Damping forces - a friend or a foe in explaining mechanical motion?

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The paper presents simle, cheap, easily accessible and for students impressive demonstration experiments for three typical examples of physical systems for which damping forces ought to be involved in the equations of motion: a body falling in air, a damped mechanical oscillator, and Foucault currents. Various models of such forces are studied within an elementary physical and mathematical approach. It appears, maybe as a slightly suprising result that a commonly used model of damping forces in mechanics - the air drag force linearly depending on velocity - is not realistic in many typical situations. Equations of motion are solved numerically with standard software packages even in cases where an analytical solution exists. Thus, the explanation of solved problems is on a level corresponding to an undergraduate university course of general physics. The results of these demonstration experiments are compared with graphical outputs of numerical solutions. The paper presents simle, cheap, easily accessible and for students impressive demonstration experiments for three typical examples of physical systems for which damping forces ought to be involved in the equations of motion: a body falling in air, a damped mechanical oscillator, and Foucault currents. Various models of such forces are studied within an elementary physical and mathematical approach. It appears, maybe as a slightly suprising result that a commonly used model of damping forces in mechanics - the air drag force linearly depending on velocity - is not realistic in many typical situations. Equations of motion are solved numerically with standard software packages even in cases where an analytical solution exists. Thus, the explanation of solved problems is on a level corresponding to an undergraduate university course of general physics. The results of these demonstration experiments are compared with graphical outputs of numerical solutions. (en)
Title	Damping forces - a friend or a foe in explaining mechanical motion? Damping forces - a friend or a foe in explaining mechanical motion? (en)
skos:prefLabel	Damping forces - a friend or a foe in explaining mechanical motion? Damping forces - a friend or a foe in explaining mechanical motion? (en)
skos:notation	RIV/00216224:14310/06:00016632!RIV10-MSM-14310___
http://linked.open...avai/riv/aktivita	S
http://linked.open...avai/riv/aktivity	S
http://linked.open...iv/cisloPeriodika	27
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Bartoš, Jiří Musilová, Jana
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	470393
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/06:00016632
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	damping; force; oscillator; drag; Newton; Stokes; experiment (en)
http://linked.open.../riv/klicoveSlovo	oscillator Stokes damping experiment force Newton drag
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[899D9CF01F87]
http://linked.open...i/riv/nazevZdroje	European Journal of Physics
http://linked.open...in/vavai/riv/obor	BE
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...UplatneniVysledku	2006
http://linked.open...v/svazekPeriodika	2006
http://linked.open...iv/tvurceVysledku	Musilová, Jana Bartoš, Jiří
http://linked.open...ain/vavai/riv/wos	000236384400020
issn	0143-0807
number of pages	10 (xsd:int)
http://localhost/t...ganizacniJednotka	14310
is http://linked.open...avai/riv/vysledek of	Damping forces - a friend or a foe in explaining mechanical motion? Damping forces - a friend or a foe in explaining mechanical motion?

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