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!

Acclerating plane

  1. Jul 15, 2005 #1
    this is another post, but i just want to post it in this room and see if ANYONE knows how to solve this:
    I've tried everything, now i'm getting depererate

    An inclined plane that makes an angle of 28° to the horizontal is mounted on wheels. A small block of mass m = 1.2 kg rests on the plane, held there by a coefficient of static friction µ = 0.73.


    The plane is accelerating to the right. What is the minimum acceleration in order that the block slides down the plane?

    Any help would be great !!!!!
     
  2. jcsd
  3. Jul 15, 2005 #2

    Pyrrhus

    User Avatar
    Homework Helper

    Apply Newton's 2nd Law and solve for a.

    The 0 degrees with the horizontal system of coordinates will be the easier one.
     
  4. Jul 15, 2005 #3
    i tried literally everything, would anyone please help me solve it??? lol...

    i came up with the following, after lots of equation, i used it to solve for a, didn't work either

    g sin (theta) - mu (a sin (theta) + g cos (theta) ) = a cos (theta)
     
  5. Jul 15, 2005 #4

    Pyrrhus

    User Avatar
    Homework Helper

    Well, with the coordinate system set as i said above.

    [tex] \sum F_{x} = ma = - n \sin \theta + F_{f} \cos \theta [/tex]

    [tex] \sum F_{y} = 0 = F_{friction} \sin \theta + n \cos \theta - mg [/tex]
     

    Attached Files:

    Last edited: Jul 15, 2005
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: Acclerating plane
  1. Accleration problem (Replies: 5)

  2. Torque and accleration (Replies: 1)

  3. Accleration and force? (Replies: 3)

  4. Accleration of 2blocks (Replies: 7)

Loading...