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Paraglider acceleration problem

  1. Oct 19, 2006 #1
    A paraglider is flying horizontally at a constant speed. Assume that only two forces act on it in the vertical direction, its weight and a vertical lift force exerted on its wings by the air. The lift force has a magnitude of 1900 N. For both questions, take the upward direction to be the +y direction.
    (a) What is the magnitude and direction of the force that the paraglider exerts on the earth?

    This correct answer is 1900 N upwards. I need help with the next part.

    (b) If the lift force should suddenly decrease to 1000 N, what would be the vertical acceleration of the glider?
    m/s2
     
  2. jcsd
  3. Oct 19, 2006 #2
    If lift force decreases to 1000N, what will be the resultant force on the body now? What relationship does resultant force and acceleration have?
     
  4. Oct 20, 2006 #3
    so would that mean the skydiver falls with a force of 900 N downward? How do I get his acceleration from that because i dont know his mass. Help?
     
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