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Tangential force acting on a skier has been set to zero?

  1. Apr 15, 2015 #1
    ImageUploadedByPhysics Forums1429105328.449808.jpg ImageUploadedByPhysics Forums1429105336.384128.jpg

    Can anyone explain why sum of Ft has been set to be = 0? The slope is smooth so no frictional forces act but by setting it to 0 they are neglecting the component of the weight along the slope? Having said that, this is a curved slope and not a straight one so does the component of the weight along the direction of motion vary continuously (since theta varies?)
     
  2. jcsd
  3. Apr 15, 2015 #2

    CWatters

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    If it's a parabola what is the slope at point A ?
     
  4. Apr 15, 2015 #3
    It's 0?
     
  5. Apr 16, 2015 #4

    CWatters

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    So what is the "component of weight along the slope" at point A?
     
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