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!

Incline Skier

  1. Oct 8, 2007 #1


    User Avatar

    1. The problem statement, all variables and given/known data
    A skier is gliding along at 3m/s on horizontal frictionless snow. He suddenly starts down a 10 degree incline. His speed at the bottom is 15 m/s.
    a) what is the length of the incline?
    b) how long does it take for him to reach the bottom?
    we know:

    2. Relevant equations
    V^2=Vo^2 +2ax

    3. The attempt at a solution
    i need help to find what the a is...and why it is that.
  2. jcsd
  3. Oct 8, 2007 #2
    the only force acting on the skier is gravity but since the skier is going down a 10 degree incline gravity is giving him some acceleration but not 100% of it's full foce.

    draw the Free Body Diagram and split up gravity into it's components where the acceleration will be parallel to the incline.
  4. Oct 8, 2007 #3


    User Avatar

    okay from my freebody diagram i get sin(10)=9.8/a
    and that is wrong....if anyone could explain to me how to do it properly please...id greatly appreciate it because i have my exam very soon.
  5. Oct 8, 2007 #4
    it should be 9.8*sin(10). the force acting parallel to the inclined plane is mgsin(theta).
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Incline Skier
  1. Skier on ramp (Replies: 2)

  2. Skier problem (Replies: 4)

  3. Airborne skier (Replies: 1)