How to make physics problem obey momentum conservation?

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SUMMARY

This discussion centers on the application of momentum conservation in physics problems, specifically addressing how to define a system to eliminate external forces. Participants explore the feasibility of considering a system comprising the Earth, a mass, and a spring to simplify momentum calculations. The key equation referenced is P=mv, which is essential for understanding momentum in this context. The consensus emphasizes the necessity of demonstrating effort in problem-solving, even for conceptual questions.

PREREQUISITES
  • Understanding of momentum and the equation P=mv
  • Familiarity with the concepts of closed systems in physics
  • Basic knowledge of external forces and their impact on momentum
  • Experience with work-energy principles in physics
NEXT STEPS
  • Research the principles of closed systems in physics
  • Study examples of momentum conservation in various physical scenarios
  • Explore the relationship between work, energy, and momentum
  • Learn about the role of external forces in momentum problems
USEFUL FOR

Students studying physics, educators teaching momentum concepts, and anyone interested in problem-solving strategies related to conservation laws in mechanics.

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Homework Statement


Can you change the system (as you would in a work/energy problem) so you can get rid of all external forces in a momentum problem for example by making your system the earth, a mass, and a spring (if the problem involved those 3 objects)?

Homework Equations



P=mv[/B]

The Attempt at a Solution



conceptual question
 
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Even with a conceptual question you still need to show your own effort.
 
  • Like
Likes   Reactions: SammyS
But it's just a yes or no question.
 

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