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Stopping a roller coaster train

Författare och institution:
Ann-Marie Pendrill (Institutionen för fysik (GU)); Magnus Karlsteen (Institutionen för teknisk fysik, Nukleär teknik, Chalmers); Henrik Rödjegård (-)
Publicerad i:
Physics Education, 47 ( 6 ) s. 728-735
ISSN:
1361-6552
Publikationstyp:
Artikel, refereegranskad vetenskaplig
Publiceringsår:
2012
Språk:
engelska
Fulltextlänk:
Fulltextlänk (lokalt arkiv):
Sammanfattning (abstract):
A roller coaster ride comes to an end. Magnets on the train induce eddy currents in the braking fins, giving a smooth rise in braking force as the remaining kinetic energy is absorbed by the brakes and converted to thermal energy. In this paper an IR camera was used to monitor the temperature of the first braking fin, before, during and after the passage of a train. In addition, the resulting acceleration of the train was modelled and compared to accelerometer data for the Kanonen roller coaster in Liseberg. The results are used to model the distribution of temperature increase over the braking fins. Finally, the cooling of the fins after the passage of the train is analysed and compared to the IR data.
Ämne (baseras på Högskoleverkets indelning av forskningsämnen):
NATURVETENSKAP ->
Fysik
SAMHÄLLSVETENSKAP ->
Utbildningsvetenskap
Nyckelord:
roller coaster, magnetic brakes, energy conservation, infrared
Postens nummer:
164272
Posten skapad:
2012-10-03 10:43
Posten ändrad:
2016-08-19 11:18

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