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Homework Help: Force of object pulled up incline

  1. May 17, 2010 #1
    1. The problem statement, all variables and given/known data

    A 23 kg suitcase is being pulled with a constant speed by a handle that is at an angle of 22° above the horizontal. If the normal force exerted on the suitcase is 170 N, what is the force F applied to the handle?

    2. Relevant equations



    3. The attempt at a solution
    Aight here is another one i am having trouble with! Again any help or suggestions would be great :)

    I drew out a diagram. My plan was to solve Force applied to handle by solving two equations (horiztonal and vertical forces)

    1) the sum of Forces (x) = Force applied - Force (weight) = 0
    2) the sum of Forces (y) = Fnormal -Force(weight)

    1) Force applied - sin 22 F(weight) = 0
    2) 170 - cos 22 F(weight) = 0
    sovling i get force (weight) = 183.5 N
    Plugging into the equation for 1
    Force applied - 0.3746 (183.5N) = 0
    Force applied = 68.68 N

    Any help with this one on strategy or how to solve this? thanks so much
     
  2. jcsd
  3. May 17, 2010 #2

    PhanthomJay

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    What incline? Although the problem is not completely clear, it appears that the suitcase is being pulled along a level surface with the handle raised 22 degrees above the horizontal.
     
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