About the Teaching of Plane Motion of Rigid Bodies

Detalhes bibliográficos
Autor(a) principal: González,Diego Luis
Data de Publicação: 2021
Outros Autores: Cadavid,Alejandro Gomez, Rodríguez,Yeinzon
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Revista Brasileira de Ensino de Física (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172021000100401
Resumo: The study of the motion of a rigid body on a plane (RBP motion) is usually one of the most challenging topics that students face in introductory physics courses. In this paper, we discuss a couple of problems which are typically used in basic physics courses, in order to highlight some aspects related to RBP motion which are not usually well understood by physics students. The first problem is a pendulum composed of a rod and disk. The angular frequency of the pendulum is calculated in two situations: disk fixed to the rod and disk free to spin. A detailed explanation of the change in the angular frequency from one case to another is given. The second problem is a ladder which slides touching a frictionless surface. We use this problem to highlight the fact that the contact forces applied by the surface perform translational and rotational work despite that the total mechanical energy of the ladder is conserved.
id SBF-1_01fabc0df9c6e45900f6d6f3d504c64d
oai_identifier_str oai:scielo:S1806-11172021000100401
network_acronym_str SBF-1
network_name_str Revista Brasileira de Ensino de Física (Online)
repository_id_str
spelling About the Teaching of Plane Motion of Rigid BodiesRigid bodyangular momentumwork-energy theoremThe study of the motion of a rigid body on a plane (RBP motion) is usually one of the most challenging topics that students face in introductory physics courses. In this paper, we discuss a couple of problems which are typically used in basic physics courses, in order to highlight some aspects related to RBP motion which are not usually well understood by physics students. The first problem is a pendulum composed of a rod and disk. The angular frequency of the pendulum is calculated in two situations: disk fixed to the rod and disk free to spin. A detailed explanation of the change in the angular frequency from one case to another is given. The second problem is a ladder which slides touching a frictionless surface. We use this problem to highlight the fact that the contact forces applied by the surface perform translational and rotational work despite that the total mechanical energy of the ladder is conserved.Sociedade Brasileira de Física2021-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172021000100401Revista Brasileira de Ensino de Física v.43 2021reponame:Revista Brasileira de Ensino de Física (Online)instname:Sociedade Brasileira de Física (SBF)instacron:SBF10.1590/1806-9126-rbef-2020-0207info:eu-repo/semantics/openAccessGonzález,Diego LuisCadavid,Alejandro GomezRodríguez,Yeinzoneng2021-12-06T00:00:00Zoai:scielo:S1806-11172021000100401Revistahttp://www.sbfisica.org.br/rbef/https://old.scielo.br/oai/scielo-oai.php||marcio@sbfisica.org.br1806-91261806-1117opendoar:2021-12-06T00:00Revista Brasileira de Ensino de Física (Online) - Sociedade Brasileira de Física (SBF)false
dc.title.none.fl_str_mv About the Teaching of Plane Motion of Rigid Bodies
title About the Teaching of Plane Motion of Rigid Bodies
spellingShingle About the Teaching of Plane Motion of Rigid Bodies
González,Diego Luis
Rigid body
angular momentum
work-energy theorem
title_short About the Teaching of Plane Motion of Rigid Bodies
title_full About the Teaching of Plane Motion of Rigid Bodies
title_fullStr About the Teaching of Plane Motion of Rigid Bodies
title_full_unstemmed About the Teaching of Plane Motion of Rigid Bodies
title_sort About the Teaching of Plane Motion of Rigid Bodies
author González,Diego Luis
author_facet González,Diego Luis
Cadavid,Alejandro Gomez
Rodríguez,Yeinzon
author_role author
author2 Cadavid,Alejandro Gomez
Rodríguez,Yeinzon
author2_role author
author
dc.contributor.author.fl_str_mv González,Diego Luis
Cadavid,Alejandro Gomez
Rodríguez,Yeinzon
dc.subject.por.fl_str_mv Rigid body
angular momentum
work-energy theorem
topic Rigid body
angular momentum
work-energy theorem
description The study of the motion of a rigid body on a plane (RBP motion) is usually one of the most challenging topics that students face in introductory physics courses. In this paper, we discuss a couple of problems which are typically used in basic physics courses, in order to highlight some aspects related to RBP motion which are not usually well understood by physics students. The first problem is a pendulum composed of a rod and disk. The angular frequency of the pendulum is calculated in two situations: disk fixed to the rod and disk free to spin. A detailed explanation of the change in the angular frequency from one case to another is given. The second problem is a ladder which slides touching a frictionless surface. We use this problem to highlight the fact that the contact forces applied by the surface perform translational and rotational work despite that the total mechanical energy of the ladder is conserved.
publishDate 2021
dc.date.none.fl_str_mv 2021-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172021000100401
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1806-11172021000100401
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/1806-9126-rbef-2020-0207
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Física
publisher.none.fl_str_mv Sociedade Brasileira de Física
dc.source.none.fl_str_mv Revista Brasileira de Ensino de Física v.43 2021
reponame:Revista Brasileira de Ensino de Física (Online)
instname:Sociedade Brasileira de Física (SBF)
instacron:SBF
instname_str Sociedade Brasileira de Física (SBF)
instacron_str SBF
institution SBF
reponame_str Revista Brasileira de Ensino de Física (Online)
collection Revista Brasileira de Ensino de Física (Online)
repository.name.fl_str_mv Revista Brasileira de Ensino de Física (Online) - Sociedade Brasileira de Física (SBF)
repository.mail.fl_str_mv ||marcio@sbfisica.org.br
_version_ 1752122425177276416

Registros relacionados