Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Plane falling from air, mechanical physics, need push in right direction

  1. Mar 16, 2010 #1
    http://i39.tinypic.com/2qvfrya.jpg

    That is the problem that I am trying to solve. It is simply a practice question but I want to make sure that I am doing things right and that I am prepared. I understand the concept of this problem and have modeled the problem on paper with triangles. I just don't understand where to get started. I am sorry if this is vague, but even the smallest hint will probably help because I have done this work before two years ago in high school, but I am at university now with a mediocre lecturer and unfortunately some of the material isn't clicking like it should.

    Thanks for any replies!
     
  2. jcsd
  3. Mar 16, 2010 #2

    Filip Larsen

    User Avatar
    Gold Member

    It may help to make a diagram with all the known forces acting on the CG of the plane and to consider what happens when the plane is in steady (non-accelerated) flight.

    The problem text seems to introduce one or more simplifications over the usual definitions in aerodynamics, so be careful if you refer to a textbook in aerodynamics.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook