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Homework Help: How much force is required?

  1. Dec 14, 2007 #1
    1. The problem statement, all variables and given/known data
    A plane is in a freefall heading downwards and is about to crash
    how much force does it require for a person to hold the plane from the nose of the plane and level it down so it does not crash.

    Humen 50kg
    plane 20,000kg
    vi: 1200 km/hr

    question i want to know is how much for does it take for a person that weighs that much to stop a falling plane.

    2. Relevant equations

    3. The attempt at a solution

    i tried to do M x G but apparently it is not correct.

    any help would be appreciated thanks.
  2. jcsd
  3. Dec 14, 2007 #2
    The plane is moving... You'll need to decelerate it from 1200kmh to 0.
  4. Dec 14, 2007 #3
    the plane is falling why do i have to decelerate it?
  5. Dec 15, 2007 #4
    Well, if you don't decelerate it before it reaches the ground, it'll crash onto the ground at 1200 kmh.
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