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Pulley moment of inertia acceleration

  1. Oct 16, 2008 #1
    1. The problem statement, all variables and given/known data

    2. Relevant equations

    3. The attempt at a solution

    I'm not sure what moment of inertia is. Inertia is the resistant to change in velocity.
  2. jcsd
  3. Oct 16, 2008 #2


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  4. Oct 16, 2008 #3
    okay i read both websites. What is the mathematical relationship between inertia and linear acceleration. If it was a free fall, will acceleration will be 9.8. Do i just subtract the inertia from acceleration?
  5. Oct 16, 2008 #4


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    The moment of inertia is the rotational treatment of mass just as angular acceleration is the analog of the linear acceleration.

    Not surprisingly then they are related by the relationship of the radius of rotation.

    F = m * a = I * a/r = I * α

    In your problem then you are looking at the interaction of the linear acceleration*mass and the angular acceleration*moment of inertia.
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