Momentum Conservation in Special Relativity: mwu

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Discussion Overview

The discussion revolves around the conservation of momentum in the context of special relativity, specifically addressing a scenario depicted in figure 16.4 from the Feynman lectures on physics. Participants are exploring the components of momentum and the reasoning behind using certain variables in calculations.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant questions why the mass used in the momentum calculation is taken from the world component (mwu) rather than the u component.
  • Another participant expresses confusion and indicates they cannot see the figure referenced.
  • A participant acknowledges their inexperience in posting and reiterates the reference to figure 16.4 from the Feynman lectures.
  • There is a suggestion that the participant should find a way to post the figure for better clarity.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there is confusion about the figure and differing levels of understanding regarding the momentum components.

Contextual Notes

Limitations include the absence of the referenced figure, which may hinder understanding of the discussion. There are also unresolved questions about the specific definitions and components of momentum being discussed.

Feynmanisthegoat
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1606329308989.png
the vertical component of momentum in the (b) figure before the collision is ∆p = mwu. Can someone please explain why we take the mass in the world component and not the u component
 

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I can't see anything there.
 
Ya man I am sorry this is my first post so I don't know what went wrong but it's figure 16.4 from the Feynman lectures on physics.
 
Feynmanisthegoat said:
Ya man I am sorry this is my first post so I don't know what went wrong but it's figure 16.4 from the Feynman lectures on physics.
You're better to find some way to post it here.
 

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