Conservation of momentum and Moment of Inertia

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Discussion Overview

The discussion centers on the application of conservation of momentum in the context of angular momentum, specifically how to substitute moment of inertia for mass in the equations. Participants explore the relationship between linear and angular momentum, particularly in relation to a baseball bat and ball scenario.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification
  • Homework-related

Main Points Raised

  • Roy seeks assistance in substituting moment of inertia into the conservation of momentum equation to analyze the speed of a baseball bat swing.
  • One participant requests clarification on the specific equation Roy is referencing, indicating that the initial question lacks detail.
  • Another participant suggests that understanding the angular momentum of the ball is crucial to the discussion.
  • Roy expresses a desire for guidance rather than direct solutions, indicating a willingness to learn independently.

Areas of Agreement / Disagreement

The discussion does not appear to reach a consensus, as participants are clarifying the initial question and exploring different aspects of angular momentum without resolving the main inquiry.

Contextual Notes

Roy's question lacks specific details about the equations he is referencing, which may limit the effectiveness of the responses. The discussion also highlights the need for a clear case to analyze the conservation of momentum in this context.

Pbaseball
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Hello everyone,
I'm needing help understanding how to take the conservation of momentum equation and substitute moment of inertia inplace of mass in the equation. I understand this is a linear equation and I'm trying to incorporate angular momentum. I just want to determine the speed of the ball and bat swing using the moi of the baseball bat. Can someone help me get started? Thanks --Roy
 
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Hello Roy, :welcome:

You could start off by stating a clear case to begin with. Not clear at all what you are looking at: 'the equation' is mentioned but reader has no idea. Cold you be a bit more elaborate ?
 
Last edited by a moderator:
CWatters said:
Perhaps start by understanding that the ball has angular momentum..

"Ball hits rod angular momentum example"
https://www.khanacademy.org/science...rial/v/ball-hits-rod-angular-momentum-example

Sweet. Thanks for the direction.
If you read in my introduction thread I'm ready to learn and teach myself but I just need some direction. I'm not looking for you guys/gals to do this for me. Thanks again. Any help is appreciated.
 

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