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Calculators Using TI-89 Plus or computer-based packages to get the moment of inertia

  1. Nov 11, 2005 #1
    can anyone suggest ways on how to calculate the moment of inertia using:
    1) graphics calculator [TI-89 plus] and/or
    2) any computer-based packages
    for a cylinder, cone and sphere?
    I believe that a program can be created in my graphics but i dont seem know how to create such a complicated one. if anyone can suggest steps, even if simple, please do so.
    thanks
     
    Last edited: Nov 11, 2005
  2. jcsd
  3. Nov 12, 2005 #2

    dx

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    Homework Helper
    Gold Member

    Since they are regular and symmetrical objects, you coud just integrate and obtain the formula and put the formula in the computer program.
    [tex] \int r^2 dm [/tex]
     
  4. Nov 12, 2005 #3
    First, what does "you could just integreate and obtain the formula" mean? do i intergrate the volume of it or what?

    second, is it possible to calculate the moment of inertia using Ti-89 or any computer program from scracth without me integrating it and putting the formula in the computer program? Is there a way where i can just simply type in (eg. r or h)?
     
  5. Nov 12, 2005 #4

    HallsofIvy

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    So basically you are asking "How do I get the formulas without knowing anything at all about moment of inertia"- and the answer is: use "google".

    The formulas are given about halfway down this page:
    http://scienceworld.wolfram.com/physics/MomentofInertia.html
     
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