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: Frictional Force

  1. Feb 23, 2008 #1
    A block is projected up an incline making an angle theta with the horizontal. It returns to its initial position with half its initial speed.


    I have absolutely no idea how to do this problem. I would think i would have to use the equation x = x +v(t) + (1/2)at^2 or maybe the equation x= (v^2) / (2ug)
     
  2. jcsd
  3. Feb 23, 2008 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Neither do I. What was the actual question?.
     
  4. Feb 23, 2008 #3
    A block is projected up an incline making an angle theta with the horizontal. It returns to its initial position with half its initial speed.

    Find the coefficient of kinetic friction.

    This was the original question.
     
  5. Feb 24, 2008 #4

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Use the work energy theorem.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook