Table of friction coefficients: Difference between revisions

Revision as of 21:43, 20 January 2010

First surface	Second surface	Condition	$μ_{s}$	$μ_{k}$	$\tan^{- 1} (μ_{s})$	$\tan^{- 1} (μ_{k})$
Aluminimum	Steel	Dry and clean	$0.61$	$0.47$	$0.55 ≃ 31$ degrees	$0.44 ≃ 25$ degrees
Aluminimum	Aluminimum	Dry and clean	$1.05 - 1.35$	$1.4$	$0.81 - 0.93 ≃ 46 - 53$ degrees	$0.95 ≃ 54$ degrees
Copper	Steel	Dry and clean	$0.53$	$0.36$	$0.49 ≃ 28$ degrees	$0.35 ≃ 20$ degrees
Copper	Copper	Dry and clean	$1.0$	?	$0.79 ≃ 45$ degrees
Wood	Wood	Dry and clean	$0.25 - 0.5$	?	$0.24 ≃ 14$ degrees	$0.46 ≃ 26$ degrees

For more, see The Engineer's Handbook

@@ Line 2: / Line 2: @@
 ! First surface !! Second surface !! Condition !! <math>\mu_s</math> !! <math>\mu_k</math> !! <math>\tan^{-1}(\mu_s)</math> !! <math>\tan^{-1}(\mu_k)</math>
 |-
-| Aluminimum || Steel || Dry and clean || <math>0.61</math> || <math>0.47</math> || <math>0.55 \sim 31</math> degrees || <math>0.44 \sim 25</math> degrees
+| Aluminimum || Steel || Dry and clean || <math>0.61</math> || <math>0.47</math> || <math>0.55 \simeq 31</math> degrees || <math>0.44 \simeq 25</math> degrees
 |-
-| Aluminimum || Aluminimum || Dry and clean || <math>1.05 - 1.35</math> || <math>1.4</math> || <math>0.81 - 0.93 \sim 46 - 53</math> degrees || <math>0.95 \sim 54</math> degrees
+| Aluminimum || Aluminimum || Dry and clean || <math>1.05 - 1.35</math> || <math>1.4</math> || <math>0.81 - 0.93 \simeq 46 - 53</math> degrees || <math>0.95 \simeq 54</math> degrees
 |-
-| Copper || Steel || Dry and clean || <math>0.53</math> || <math>0.36</math> || <math>0.49 \sim 28</math> degrees || <math>0.35 \sim 20</math> degrees
+| Copper || Steel || Dry and clean || <math>0.53</math> || <math>0.36</math> || <math>0.49 \simeq 28</math> degrees || <math>0.35 \simeq 20</math> degrees
 |-
-| Copper || Copper || Dry and clean|| <math>1.0</math> || ? || <math>0.79 \sim 45</math> degrees
+| Copper || Copper || Dry and clean|| <math>1.0</math> || ? || <math>0.79 \simeq 45</math> degrees
 |-
-| Wood || Wood || Dry and clean || <math>0.25 - 0.5</math> || ? || <math>0.24 \sim 14</math> degrees || <math>0.46 \sim 26</math> degrees
+| Wood || Wood || Dry and clean || <math>0.25 - 0.5</math> || ? || <math>0.24 \simeq 14</math> degrees || <math>0.46 \simeq 26</math> degrees
 |}
 For more, see [http://www.engineershandbook.com/Tables/frictioncoefficients.htm The Engineer's Handbook]