Coefficient of kinetic friction on inclined plane

  • #1
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Why would the coefficient of kinetic friction be larger for an inclined plane versus a horizontal plane?
Would it be related to the material? I thought initially it was something to do with the force of gravity… but apparently that's not it :(
Thanks so much in advance!
 

Answers and Replies

  • #2
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Hi Melanie.H. Welcome to Physics Forums.
Why would the coefficient of kinetic friction be larger for an inclined plane versus a horizontal plane?

It's not.
Would it be related to the material?
Yes. It is related to the two materials that are in sliding contact.
I thought initially it was something to do with the force of gravity… but apparently that's not it :(
No. That's right.

Chet
 
  • #3
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Thanks! :D I was just wondering because for an experiment I actually got that it was bigger for the inclined plane….
 
  • #4
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Thanks! :D I was just wondering because for an experiment I actually got that it was bigger for the inclined plane….
In the real world, the coefficient of kinetic friction also depends on the relative velocity between the sliding surfaces.

Chet
 
  • #5
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Hm, interesting! That would also contribute to some of the limits of how large the coefficient can be then?
 
  • #6
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Hm, interesting! That would also contribute to some of the limits of how large the coefficient can be then?
I don't think so. That depends on the materials that are in contact.

Chet
 
  • #7
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Okay, that makes sense :)
 
  • #8
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Oh, I suppose I should have mentioned for my original question that the block was being pulled up or across the plane at a constant velocity… would this change anything?
 
  • #9
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Oh, I suppose I should have mentioned for my original question that the block was being pulled up or across the plane at a constant velocity… would this change anything?
No.
 

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