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Homework Help: Aircraft Carrier - Linear Momentum converted to Angular Momentum and Impact Force

  1. Sep 11, 2009 #1
    1. The problem statement, all variables and given/known data

    An aircraft is landing on a carrier ship in the middle of the Pacific. When the aircraft’s jump cable catches to stop the plane, the aircraft is travelling at 110 mph with the front of the plane 3 feet off the deck of the ship. If the assumption is made that the cable stops the aircraft immediately (the cable is not elastic), what would be the estimated impact force on the front end of the aircraft with the following conditions?
    -The aircraft is 24 feet long
    -1000 lbs located 4 feet above rear axle (pivot point)
    -5000 lbs located 5 feet above center of plant (when plane is level)
    -1500 lbs located 3 feet above front axle
    -Do NOT ignore gravity
    -Assume no impact absorbed by the front tire

    2. Relevant equations

    L (linear momentum) = mass * velocity
    A (angular momentum) = L x r (cross product of linear momentum and vector)
    kinetic energy ? possible needed

    3. The attempt at a solution

    Tried using angular momentum (lb ft2 / sec) but that will not add with gravitational force multiplied by distance and mass (lb ft2 / s2). I'm really stuck here please help!
    Last edited: Sep 11, 2009
  2. jcsd
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