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: Kinetic Friction question

  1. Feb 21, 2010 #1
    1. The problem statement, all variables and given/known data

    A magician pulls a tablecloth from under some dishes, how far do the dishes move during the.25s it takes the table cloth out? Coefficient of kinetic friction=0.12 and time=.25s I can't find the solution to this prob. in fact I don't know where to start because I don't have mass or weight.

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Feb 21, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Try drawing a free body diagram of the forces acting on the dishes. By applying Newton's laws, you may find that you don't need to know the mass.
  4. Feb 21, 2010 #3
    Thanks ya I figured it out all I needed was acceleration, and then then I found the distance.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook