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!

Ratio of masses

  1. Nov 9, 2009 #1
    1. The problem statement, all variables and given/known data
    A CD (radius 6.0 cm) is spinning freely with an angular velocity of 420 rpm when a bug drops onto the CD a distance 4.4 cm from the center. If the CD slows to 280 rpm, what is the ratio of the bug's mass to the mass of the CD? (Ignore the effect of the hole in the center of the CD.)

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Nov 9, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Hi dorian_stokes! :wink:

    Use conservation of angular momentum …

    what do you get? :smile:
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook