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VERY IMPORTANT angular momentum

  1. Nov 28, 2007 #1
    In the following diagram:

    http://i19.tinypic.com/7xaa148.jpg

    A bullet of velocity 5 m/s hits an initially at rest rod. The mass of the bullet is 2kg.

    The rod rotates around its axis in its top, I=(1/3)ML^2. It's mass of 3. It's distance is 4m. The rod finally stops moving after the collision at 90 degrees upward from the collision.

    After the collision the bullet moves away at an angle of theta.

    Kinetic energy is conserved. I used this to find both both vf and omega f of the bullet and rod.. but

    HOW DO I FIND THETA???



    any ideas!?!? PLEASE!?
     

    Attached Files:

  2. jcsd
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