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Calculation of inertia resistance in my geometry

  1. Jun 26, 2009 #1
    Dear all,

    I have bit vague about calculation of inertia resistance in my geometry.i have rotational system of regular geometry,i have calculated the "I"value .
    which equation i have to use I * alpha or I *w(omega^2),or they both in same....

    In some calculations later equation is used....

  2. jcsd
  3. Jun 26, 2009 #2


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    Hi Prakash! :smile:

    (have an alpha: α and an omega: ω and try using the X2 tag just above the Reply box :wink:)

    Learn your moment of inertia basics …

    Iω is angular momentum, 1/2 I ω2 is energy,

    and d/dt(Iω) = Iα + (dI/dt)ω is torque (so if I is constant, then Iα is torque). :smile:
  4. Jun 26, 2009 #3
    Re: inertia

    The basic equivalence to inertia is mass, like in p (momentum)= mv. In rotational systems, it would be the moment of inertia, like mb2 for a point mass m at the end of a massless rod of length b.
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