(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A projectile of mass m moves to the right with a speed vi. The projectile strikes and sticks to the end of a stationary rod of mass M, of length d, that is pivoted about a frictionless axle through its center.

(a) Find the angular speed of the system right after the collision. (Use v_i for vi, m, M, and d as appropriate in your equation.)

(b) Determine the fractional loss in mechanical energy due to the collision. (Use v_i for vi, m, M, and d as appropriate in your equation.)

2. Relevant equations

I_{f}[tex]\omega[/tex]_{f}=I_{i}[tex]\omega[/tex]_{i}

W= K_{1}-K_{2}

3. The attempt at a solution

http://qaboard.cramster.com/Answer-Board/Image/2007111219463329548144409250092.jpg [Broken]

i did it like this but for some reason my part (b) is saying that I'm wrong. Can someone help?

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# Homework Help: Angular Momentum Equation

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