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Find μk between the block and the inclined plane?

  1. Oct 14, 2008 #1
    A block accelerates 3.5 m/s2 down a plane
    inclined at angle 27.0◦.
    The acceleration of gravity is 9.81 m/s2 .
    Find μk between the block and the inclined

    I am completly lost. How can I find the μk if I do not know the mass of the block?
  2. jcsd
  3. Oct 14, 2008 #2


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    The mass term should cancel out of your equations. Try leaving everything in terms of the variables, and save the numerical calculations until the very end.
  4. Oct 14, 2008 #3
    Do you know the 2 forumals used?
  5. Oct 14, 2008 #4


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    Welcome to PF!

    Hi HebrewHammer! Welcome to PF! :smile:

    As hage567 suggests, call the mass "m", and then do all the equations as usual. :wink:

    If you get stuck, show us how far you've got, and then we can see what the problem is. :smile:
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