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Box sliding up an inclined plane with constant velocity

  1. Apr 17, 2005 #1
    I've been working on this problem all afternoon and i just have a complete blackout and no idea how to solve it:
    the question is what force, parallel to the plane has to be applied if the object is moving up an inclined speed at a steady speed of 3.2 m/s.
    i have the object's mass and the angle of the inclined plane...
    if anyone can relieve me....that would be amazing...i'm so frustrated...

    thank you....
  2. jcsd
  3. Apr 17, 2005 #2
    Well the force that you will need to overcome is the component of gravity along the incline. Suppose the x-axis is along the incline, pointing upwards. the clue is that you have a constant speed : this means that the block is moving with zero acceleration. thus, you have along the incline :

    [tex]0 = F -mgsin(\theta)[/tex]

    F is the force you are looking for...

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