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Physics of the mechanical toy Gee-Haw Whammy Diddle

Gee-Haw Whammy Diddle is a seemingly simple mechanical toy consisting of a wooden stick and a second stick that is made up of a series of notches with a propeller at its end. When the wooden stick is pulled over the notches, the propeller starts to rotate. Despite its simplicity, physical principles...

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Detalles Bibliográficos
Autores principales: Marek, Martin, Badin, Matej, Plesch, Martin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5829150/
https://www.ncbi.nlm.nih.gov/pubmed/29487325
http://dx.doi.org/10.1038/s41598-018-22079-1
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author Marek, Martin
Badin, Matej
Plesch, Martin
author_facet Marek, Martin
Badin, Matej
Plesch, Martin
author_sort Marek, Martin
collection PubMed
description Gee-Haw Whammy Diddle is a seemingly simple mechanical toy consisting of a wooden stick and a second stick that is made up of a series of notches with a propeller at its end. When the wooden stick is pulled over the notches, the propeller starts to rotate. Despite its simplicity, physical principles governing the motion of the stick and the propeller are rather complicated and interesting. Here we provide a thorough analysis of the system and parameters influencing the motion. We show that contrary to the results published on this topic so far, neither elliptic motion of the stick nor frequency synchronization is needed for starting a stable motion of the propeller.
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spelling pubmed-58291502018-03-01 Physics of the mechanical toy Gee-Haw Whammy Diddle Marek, Martin Badin, Matej Plesch, Martin Sci Rep Article Gee-Haw Whammy Diddle is a seemingly simple mechanical toy consisting of a wooden stick and a second stick that is made up of a series of notches with a propeller at its end. When the wooden stick is pulled over the notches, the propeller starts to rotate. Despite its simplicity, physical principles governing the motion of the stick and the propeller are rather complicated and interesting. Here we provide a thorough analysis of the system and parameters influencing the motion. We show that contrary to the results published on this topic so far, neither elliptic motion of the stick nor frequency synchronization is needed for starting a stable motion of the propeller. Nature Publishing Group UK 2018-02-27 /pmc/articles/PMC5829150/ /pubmed/29487325 http://dx.doi.org/10.1038/s41598-018-22079-1 Text en © The Author(s) 2018 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Marek, Martin
Badin, Matej
Plesch, Martin
Physics of the mechanical toy Gee-Haw Whammy Diddle
title Physics of the mechanical toy Gee-Haw Whammy Diddle
title_full Physics of the mechanical toy Gee-Haw Whammy Diddle
title_fullStr Physics of the mechanical toy Gee-Haw Whammy Diddle
title_full_unstemmed Physics of the mechanical toy Gee-Haw Whammy Diddle
title_short Physics of the mechanical toy Gee-Haw Whammy Diddle
title_sort physics of the mechanical toy gee-haw whammy diddle
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5829150/
https://www.ncbi.nlm.nih.gov/pubmed/29487325
http://dx.doi.org/10.1038/s41598-018-22079-1
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