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I How many degrees of freedom does a swan's neck have

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  1. Apr 28, 2017 #1
    how many degrees of freedom swan's neck have
     
  2. jcsd
  3. Apr 28, 2017 #2
    how many degrees of freedom does a wire have? infinitely many
     
  4. Apr 28, 2017 #3

    Dale

    Staff: Mentor

    I think it is far fewer than that.
    Are you interested in the maximum theoretical degrees of freedom, or the minimum degrees of freedom to realistically model it?
     
  5. Apr 28, 2017 #4
    depends on model you choose. The model should be determined explicitly in the statement of the problem. I model the neck as infinitely many degrees of freedom system.
     
  6. Apr 28, 2017 #5

    Dale

    Staff: Mentor

    Seems like a bad choice to me. It doesn't have infinite degrees of freedom, and I cannot think of a practical reason to model it with more degrees of freedom than it has.

    I have a fundamental dislike of models with too many degrees of freedom
     
  7. Apr 28, 2017 #6
    ok let's invite zoologist to explain us how swan's spine is organized
     
  8. Apr 28, 2017 #7

    Dale

    Staff: Mentor

    Or at least wait for the OP to clarify their goal as I asked in post 3.
     
  9. Apr 28, 2017 #8
    What do you prefer: to consider the ideal gas by means of Euler equation which implies infinitely many degrees of freedom or to consider it as a Hamiltonian system of particles with billions degrees of freedom?
     
  10. Apr 28, 2017 #9

    Dale

    Staff: Mentor

    A swan's neck isn't a gas.
     
    Last edited: Apr 28, 2017
  11. Apr 28, 2017 #10

    Drakkith

    User Avatar

    Staff: Mentor

    A swan's neck is composed of a number of vertebrae that can move about, so the number of degrees of freedom will be based almost completely off of the possible motions of the bones. How many neck bones a swan has and how exactly they move I don't know. I leave that to the OP to find out.
     
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