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!

Will it Rotate or Translate?

  1. Jun 25, 2012 #1
    A particle hits a rod at one of its end in space.
    Now will the rod rotate or translate or do both.....What part of the force goes into translation/rotation ??
    If the above scenario happens in air, what will differ?
  2. jcsd
  3. Jun 25, 2012 #2
    There are several things to consider--whether this is an elastic or inelastic collision and what angle the particle strikes the rod.

    Regardless, conservation of linear and angular momentum apply for the system as a whole, so if the particle doesn't come in straight along the length of the rod, the rod's going to rotate after collision.
  4. Jun 25, 2012 #3
    But why would it rotate and not translate??
    (assume elastic collision and the velocity of particle is perpendicular to length of rod)
  5. Jun 25, 2012 #4

    D H

    User Avatar
    Staff Emeritus
    Science Advisor

    It's going to do both. Angular momentum and linear momentum are conserved quantities.
  6. Jun 25, 2012 #5
    Ok, i seem to get it now. Just wasn't sure.
    Thank You for your Help. :approve:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook