File:Static and dynamic friction on a hill.svg

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Summary

Description
Deutsch: Ab einem bestimmten Neigungswinkel beginnt ein ruhender Körper zu gleiten.
Fig.1: Hangabtriebskraft FH und Haftreibungskraft FHaft sind gleich groß. => Der Körper bewegt sich nicht.

Fig.2: wie bei Fig.1, aber hier ist die maximale Haftreibungskraft FHaft,max erreicht.
Fig.3: Die Hangabtriebskraft FH ist größer als die Gleitreibungskraft FGleit => Der Körper bewegt sich. => Gleitreibung

Bemerkung: Die Reibungskräfte greifen eigentlich an der Kontaktfläche zwischen Körper und Untergrund an.
English:
Fig.1 & 2: Static friction

Fig.3: Dynamic / Kinetic friction

Comment: The force of the friction actually acts on the bottom of the body.
Date
Source Own work
Author Klaus-Dieter Keller
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18 May 2012

File history

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Date/TimeThumbnailDimensionsUserComment
current21:30, 29 May 2012Thumbnail for version as of 21:30, 29 May 2012905 × 300 (131 KB)Kdkelleradded exact German description
05:12, 21 May 2012Thumbnail for version as of 05:12, 21 May 2012900 × 300 (126 KB)Kdkellermoved v=0 in Fig.1
05:09, 21 May 2012Thumbnail for version as of 05:09, 21 May 2012900 × 300 (126 KB)KdkellerBigger box added
15:47, 18 May 2012Thumbnail for version as of 15:47, 18 May 2012900 × 300 (137 KB)Kdkellerchanged FR => FR,max in Fig.1&2
15:02, 18 May 2012Thumbnail for version as of 15:02, 18 May 2012900 × 300 (126 KB)Kdkeller
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