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!

Horsepower engine is required?

  1. Oct 8, 2008 #1
    1. The problem statement, all variables and given/known data
    A 80kg skier grips a moving rope that is powered by an engine and is pulled at constant speed to the top of a 23*degrees hill. The skier is pulled a distance x = 250m along the incline and it takes 2.1 minutes to reach the top of the hill.
    If the coefficient of kinetic friction between the snow and skis is uk = 0.10, what horsepower engine is required if 30 such skiers (max) are on the rope at one time?

    2. Relevant equations

    P= w/t=mgy/t

    3. The attempt at a solution
    80x9.8xsin23*=306
    Fnuk=Fr
    80x9.8x.1=78.4
    306+78.4=390N

    390x9.8x250/126s=773 W X30 =3.1x10^4hp
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you help with the solution or looking for help too?
Draft saved Draft deleted



Similar Discussions: Horsepower engine is required?
  1. Heat engines (Replies: 0)

Loading...