Incline and Firction (again!)

  • Thread starter vysis
  • Start date
  • #1
28
0

Homework Statement



A skier on a slope inclined at 4.7 degrees from the horizontal starts down the slope with an initial speed of 2.7m/s. The coefficient of friction is 0.11. Determine how far the skier will slide before coming to a rest.

Homework Equations



Fnet=ma
F(f) = (mu)N

The Attempt at a Solution


Completely lost =(
 

Answers and Replies

  • #2
LowlyPion
Homework Helper
3,097
5

Homework Statement



A skier on a slope inclined at 4.7 degrees from the horizontal starts down the slope with an initial speed of 2.7m/s. The coefficient of friction is 0.11. Determine how far the skier will slide before coming to a rest.

Homework Equations



Fnet=ma
F(f) = (mu)N

The Attempt at a Solution


Completely lost =(

What is the component of gravitational force on the skier that would induce the skier to continue down hill? What is the retarding force?. Using that find the rate of deceleration. That might be a good place to start then.
 
  • #3
28
0
What is the component of gravitational force on the skier that would induce the skier to continue down hill? What is the retarding force?. Using that find the rate of deceleration. That might be a good place to start then.

thats the thing though... it doesn't give you the mass. It ONLY gives you the force of kinetic friction and the initial speed
 
  • #4
28
0
Solved, thanks guys
 
  • #5
LowlyPion
Homework Helper
3,097
5
thats the thing though... it doesn't give you the mass. It ONLY gives you the force of kinetic friction and the initial speed

Don't despair. Work things through. The mass may not matter.

When you develop the equation for the net force the mass part drops out to give you the net retarding deceleration.

You use that with the distance relationship that is v2/2a

Edit: Congrats then. Good Luck.
 

Related Threads on Incline and Firction (again!)

  • Last Post
Replies
6
Views
733
  • Last Post
Replies
10
Views
2K
  • Last Post
Replies
4
Views
2K
  • Last Post
Replies
2
Views
2K
  • Last Post
Replies
13
Views
15K
  • Last Post
Replies
1
Views
1K
Replies
6
Views
2K
  • Last Post
Replies
15
Views
9K
  • Last Post
Replies
1
Views
3K
  • Last Post
Replies
3
Views
795
Top