What does moment of inertia depend on?

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Discussion Overview

The discussion revolves around the concept of moment of inertia, specifically what factors it depends on, including the relationship between mass, shape, and the interpretations of a video by Professor Lewin. The scope includes conceptual clarification and debate over the statements made in the video.

Discussion Character

  • Debate/contested
  • Conceptual clarification

Main Points Raised

  • Some participants assert that moment of inertia depends on both the mass of the object and its shape.
  • Others challenge this view, claiming that Professor Lewin does not state that moment of inertia is independent of mass, and some suggest he does not even mention the term 'moment of inertia' in the video.
  • There are claims that the discussion has become unproductive, with some participants expressing frustration over the perceived lack of clarity in the video and the thread itself.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as there are multiple competing views regarding the interpretation of Professor Lewin's statements and the factors that influence moment of inertia.

Contextual Notes

There are unresolved assumptions regarding the definitions of moment of inertia and the context in which Professor Lewin's statements are made. The discussion reflects differing interpretations of the video content.

avito009
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I thought moment of inertia depends on mass of the object and also its shape. But prof Lewin says it doesn't depend on mass. See this video:
 
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avito009 said:
I thought moment of inertia depends on mass of the object and also its shape. But prof Lewin says it doesn't depend on mass.
No, he does not say that.
 
This doesn't regard the inertial moment much.
 
He says no such thing, You've wasted fifteen minutes of my time. I hope you got your laughs from that.
 
avito009 said:
But prof Lewin says it doesn't depend on mass.
Not quite. He does demonstrate that the acceleration does not depend on the mass.

Not even sure he mentions the term 'moment of inertia' at all in that video.
 
Vanadium 50 said:
He says no such thing, You've wasted fifteen minutes of my time. I hope you got your laughs from that.
This is so funny! On the assumption that every post deserves some sort of response..Dont read this. Sorry.. Too late
But seriously, does your 15 minutes 'wasted' time include the time needed to make your post?
 
No, just watching the 15 minute video.
 
Vanadium 50 said:
He says no such thing, You've wasted fifteen minutes of my time. I hope you got your laughs from that.

You should have told him that the answer to his question is somewhere in the folloing lecture:

 
I don't think this thread serves any purpose any more. It should probably be closed or moved out of view.
 

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