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Is my procedure correct to compute this moment of inertia J?

  1. Jul 29, 2015 #1
    Looking at the image below, we have the function

    [itex]z^2=\frac{r^2}{a} y[/itex]

    revolving about y-axis. We know that y goes from 0 to "a". We also know the mass of the object (of uniform density). Do you think is my procedure correct? Do you get the same result?

  2. jcsd
  3. Jul 29, 2015 #2
    I did wrong calculation. The results should be

    (2 m r^2) / 3

    without "a".
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