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Friction sled slope easy question!

  1. Oct 27, 2012 #1
    1. The problem statement, all variables and given/known data
    The question is: An empty sled of mass 25 kg slides down a hill with constant speed of 2.4 m/s. The slope of the hill is inclined at an angle of 15 degrees

    How come the normal force of the sled is NOT 250 N?

    2. Relevant equations
     
  2. jcsd
  3. Oct 27, 2012 #2

    rock.freak667

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    Homework Helper

    Assuming here g= 10 N/kg, the weight is 250N.

    However since the mass is moving down an incline at 15 degrees, the normal force will be a component of the weight i.e. a fraction of the weight.
     
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