Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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


    User Avatar
    Homework Helper

    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


    User Avatar
    Science Advisor
    Homework Helper

    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:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook