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Which cylinder will reach the bottom of the plane first?

  1. Jul 26, 2006 #1
    Please check if my answer is reasonable. Any input is appreciated.

    Q. Given a hollow and a solid cylinder of equal masses that are placed on an inclined plane. Also, both cylinders have equal radii. Which cylinder will rewach the bottom of the plane first?

    I_hollow=MR^2 (fow negligible thickness cylinder)

    -I about an axis is used to describe how difficult it is to induce rotational motion. Higher I means higher resistance to rotational motion, and vice versa. Therefore, the solid cylinder reaches the bottome first.
  2. jcsd
  3. Jul 26, 2006 #2
    Seems like the solid one should reach the bottom first because it more easily rotates. Don't think you posted in the right section though.
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