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!

Friction, Inclines

  1. Jan 15, 2008 #1
    Hi !

    Can anyone help me ??????????

    Problem :
    1- A coffee cup on the dashboard of a car slides forward on the dash when the driver decelerates from 40 km/h to rest in 3.5 s or less, but not if he decelerates in a longer time. What is the coefficient of static friction between the cup and the dash ?
    2- An 18-kg box is released on a 37*(grade) incline and accelerates down the incline at 0.270 m/s(square). Find the friction force impeding its motion. How large is the coefficient of friction

    Thanks !!!!
    Last edited: Jan 15, 2008
  2. jcsd
  3. Jan 15, 2008 #2

    Tom Mattson

    User Avatar
    Staff Emeritus
    Science Advisor
    Gold Member

    According to the rules of this Forum, you must show an attempt at the problem before receiving help.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Friction, Inclines
  1. Friction On Inclines (Replies: 1)

  2. Friction and Incline (Replies: 2)

  3. Friction on an incline (Replies: 9)

  4. Friction on an incline (Replies: 6)

  5. Inclines and friction (Replies: 1)