Momentum in special relativity problem

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Homework Help Overview

The discussion revolves around a problem related to calculating momentum in the context of special relativity. The original poster seeks clarification on the correct approach to find momentum, referencing an image that contains the question.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants discuss the energy-momentum relationship and its relevance to the problem. There is an inquiry into what constitutes the "right way" to approach the question posed in the image, with some participants questioning the original poster's assumptions about correctness.

Discussion Status

The conversation is ongoing, with participants exploring different interpretations of the problem and clarifying the terms of the question. There is no explicit consensus, but guidance regarding the energy-momentum relationship has been provided.

Contextual Notes

The original poster has referenced an image for context, which may contain specific details or assumptions that are not fully articulated in the text. There is an indication of confusion regarding the definition of a "right way" to solve the problem.

sapz
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Homework Statement


Hi there.

I added a question as an image, what is the right way to find the momentum?

Homework Equations





The Attempt at a Solution

 

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what is the right way to find the momentum?
You use the energy-momentum relationship.

##E^2 = m^2c^4 + p^2c^2##

The kinetc energy is ##K=(\gamma -1)mc^2## and ##E=\gamma mc^2##
 
Im aware of that. However could you please address the question in the picture? Which way is wrong, and why?
 
I was[/] addressing the pic.
The pic includes the question "What is the momentum of the moving particle?"
You wanted to know the right way to go about it - I told you.

It seems I misunderstood.
Define "right way". (What makes you think there is a wrong way in there?)
The pic shows you how to solve for two contexts in relation to the center-of-mass.
 
Last edited:

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