1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    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!

Homework Help: Rotation Problem Involving Two Disks

  1. Dec 3, 2012 #1
    1. The problem statement, all variables and given/known data
    I attached the problem as a word file.


    2. Relevant equations



    3. The attempt at a solution

    I think I will be able to solve this problem; my only questions is, can I treat the two disks as one, by summing their rotational inertias together?
     

    Attached Files:

  2. jcsd
  3. Dec 3, 2012 #2

    TSny

    User Avatar
    Homework Helper
    Gold Member
    2017 Award

    Yes. That's correct. I = Ʃmr2 where the sum is over all the particles in the system. You can break the sum into two parts, one part for the first disk and the other part for the second disk.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook