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Polar mass moment of inertia *and* simply moment of inertia

  1. Dec 23, 2014 #1
    Hi ,everyone…

    i wanted to clear my one confusion ,that
    what is actual difference between polar mass moment of inertia and simply moment of inertia…??
     
  2. jcsd
  3. Dec 23, 2014 #2

    SteamKing

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    Polar moment of inertia and mass moment of inertia are sometimes used interchangeably. There is no material difference between the two.

    In talking about second moments of area, the polar moment of inertia has a distinct definition and usage:

    http://en.wikipedia.org/wiki/Polar_moment_of_inertia
     
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