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!

Static friction: Will the box move?

  1. Dec 1, 2016 #1
    1. The problem statement, all variables and given/known data
    A 55.0-kg box rests on a horizontal surface. The coefficient of static friction between the box and the surface is 0.300. A force of 156 N is applied to the box directed at an angle of 18.0 above the horizontal. Does the box move?

    Please help?!?!


    3. The attempt at a solution
    156 (cos18)= .300 (55kg×9.81m/s)
    148.36N = 161.865 so no, the box wouldn't move. but my answer is wrong
     
  2. jcsd
  3. Dec 1, 2016 #2

    PeroK

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    Does the force of 156N do anything else?
     
  4. Dec 1, 2016 #3
    I'm not sure what you mean
     
  5. Dec 1, 2016 #4

    PeroK

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    It has an upward component.
     
    Last edited: Dec 3, 2016
  6. Dec 3, 2016 #5
    Assuming you're saying the applied force has an upward tilt, break it down into its x and y components. How does this interact with the gravitational force acting on the mass?
     
  7. Dec 3, 2016 #6

    gneill

    User Avatar

    Staff: Mentor

    Moderator's note: Thread title modified to make it more descriptive of the problem being addressed. Thread titles should not be overly generic.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted



Similar Discussions: Static friction: Will the box move?
Loading...