1. Limited time only! Sign up for a free 30min personal 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!

Homework Help: How do i find the coefficient of friction

  1. Apr 27, 2012 #1
    1. The problem statement, all variables and given/known data

    A block begins to slide down a ramp after being elevated to an angle of 53.75 degrees. What is the coefficient of static friction?

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Apr 27, 2012 #2
    What formulas do you know regarding incline planes and friction?
  4. Apr 27, 2012 #3
    normal force=m*g*sin of angle and net force= m*g* cos of angle
  5. Apr 27, 2012 #4
    will i have to find the mass of the block first
  6. Apr 27, 2012 #5


    User Avatar
    Science Advisor
    Homework Helper

    hi adorrea! :smile:
    no, call the mass "m" …

    it'll cancel out in the end :wink:

    (and assume the acceleration is 0)
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook