Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Cube subjected to an impulse

  1. Feb 25, 2009 #1
    I'd be grateful if someone could help me with the problem below:

    A free-floating uniform cube with sides of length 2 is at rest,
    aligned with the coordinate axes, when it is subjected to an
    impulse along one edge of 3m, where m is its mass. What
    is the effect on its motion? (Its inertia tensor is 2/3mI)

    Do I calculate the angular velocity or what? And how?

    Thanks for any help.
  2. jcsd
  3. Feb 26, 2009 #2


    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi sabatier! Welcome to PF! :smile:

    (how can impulse have dimensions of mass? :confused:)

    You have to calculate the velocity of the centre of mass, and the angular velocity (including specfiying the axis of rotation) relative to the centre of mass. :wink:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook