Hi, I am trying to work out the result of a collision between two rotating particles if you knew all initial speeds, initial rotation speeds, masses etc. There is no friction or anything complicating.(adsbygoogle = window.adsbygoogle || []).push({});

COM: m_{1}v_{1initial}+ m_{2}v_{2initial}= m_{1}v_{1final}+ m_{2}v_{2final}.

COAM: I_{1}w_{1initial}+ I_{2}w_{2initial}= I_{1}w_{1final}+ I_{2}w_{2finall}.

COE: m_{1}v^{2}_{1initial}+ m_{2}v^{2}_{2initial}+ I_{1}w^{2}_{1initial}+ I_{2}w^{2}_{2initial}= I_{1}w^{2}_{1final}+ I_{2}w_{2finall}+ m_{1}v^{2}_{1final}+ m_{2}v^{2}_{2finall}.

So 3 equations for 4 unknowns . Am I missing anything obvious? Is there another equation I could use was thinking trying to use L= r x mv ? Is there any assumptions I could make to simplify things?

Thanks for any help.

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# Homework Help: Colliding, spinning particles: Can it be solved?

Can you offer guidance or do you also need help?

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