1. PF Contest - Win "Conquering the Physics GRE" book! Click Here to Enter
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Inertia of rolling objects

  1. Dec 30, 2009 #1
    Among a hoop, disk and solid sphere of the same radius, which - without slipping - would descend an inclined plane fastest?
  2. jcsd
  3. Dec 31, 2009 #2


    User Avatar
    Science Advisor

    My guess: All the same speed.
  4. Dec 31, 2009 #3
    From what I recall, from fastest to slowest:

    1. Any solid Sphere
    2. Any solid cylinder
    3. Any hollow sphere
    4. Any hollow cylinder
  5. Dec 31, 2009 #4
    Solid sphere - lowest moment of inertia of the figures listed.
  6. Dec 31, 2009 #5
    And I thought I could fool you guys by putting a little spin on the question.:wink:
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Threads - Inertia rolling objects Date
B Table cloth trick Feb 25, 2018
B Inertia - two objects falling Feb 15, 2018
I Can a bicycle be tipped over by only applying rear brake? Jan 16, 2018
I Equivalent mass of rotating parts Jan 3, 2018
B How To Create the Fastest Rolling Can Possible Mar 1, 2017