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Gravitational potential energy

  1. Apr 16, 2009 #1
    1. The problem statement, all variables and given/known data
    A fully loaded Cessna-182 airplane of mass 1250 kg has an engine failure when flying with an airspeed of 126 km/h at an altitude of 2540 m on a calm day. It then glides at a constant glide angle (which is the direction of flight below the horizontal) towards a safe landing at this constant speed of 126 km/h experiencing a drag force of 1300 N that opposes the direction in which the plane is moving.
    Please use: g = 9.81 m s-2


    2. Relevant equations
    Find the rate with which the loaded plane is losing gravitational potential energy.

    the answer is 47.3 but i dont know how to get it
     
    Last edited: Apr 16, 2009
  2. jcsd
  3. Apr 25, 2009 #2
    this isite sux no relpy
     
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