1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Coefficient of Kinetic Friction

  1. Nov 12, 2008 #1
    1. The problem statement, all variables and given/known data
    A box slides down a 30.0 degree ramp with an acceleration of 1.20 m/s^2. Determine the coefficient of kinetic friction between the box and the ramp.

    2. Relevant equations
    μk=f sub k/Fn

    3. The attempt at a solution

    With the information I have, I have no samples in my physics book or anything. I ohnestly don't know where to start.
  2. jcsd
  3. Nov 12, 2008 #2


    User Avatar
    Gold Member

    I would start by drawing a free body diagram.

    Edit: Fixed spelling
  4. Nov 12, 2008 #3
    Is there a mathematical solution though?
  5. Nov 12, 2008 #4
    What do I need to get to solve this? Do I need mass? Normal force? what?

    k well...i have searched the glossary of my book, searched the internet since 3 pm.
    Last edited: Nov 12, 2008
  6. Nov 12, 2008 #5


    User Avatar
    Gold Member

    Yes there is an analytical solution to the problem. Draw the free body diagram and write out the sum of the forces in both the x and y directions.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Coefficient of Kinetic Friction