Moment of Inertia of a Ring: Formula and Application

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Homework Help Overview

The discussion revolves around the moment of inertia of a ring, specifically seeking the formula that incorporates the inner radius, height, and thickness of the ring.

Discussion Character

  • Exploratory, Assumption checking

Approaches and Questions Raised

  • Participants are attempting to clarify the dimensions of the ring and whether the moment of inertia can be derived by subtracting the inertia of a smaller disc from that of a larger disc. There are questions about the specific parameters needed for the formula.

Discussion Status

The conversation is ongoing, with participants providing guidance on how to approach the problem while encouraging the original poster to share their own work or reasoning. There is no explicit consensus yet, as the discussion is still exploring the necessary details and assumptions.

Contextual Notes

There is a mention of the need for clarity regarding the dimensions of the ring, particularly the relationship between the inner radius and the height, as well as the implications of thickness on the moment of inertia.

getneotome
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Moment of Inertia

Hello community members,

Can anyone let me know, the moment of Inertia formula (I) for a ring with inner radius (R) and height (h). Thickness can be considered (t).

Awating response...

Kind regar
 
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Welcome to PF!

Hi getneotome! Welcome to PF! :smile:

Do you mean a ring with inner radius R and outer radius R + h?

If so, just remember that Moment of Inertia is always additive, so you can just subtract the Moment of Inertia of a disc of radius R from the Moment of Inertia of a disc of radius R + h. :smile:
 
Dear Community memebers,

Can anyone tell me the formula for Moment of Inertai (I) for a ring with inner radius of (R) and height (h) and thickness (t).

Awaiting response...

Kind regards..
 
Hi getneotome!

Thanks for the PM, but the idea is that you show us what you've done. :smile:
 
getneotome is this a problem you have to solve, or a result that you need for a problem that you have to solve?
 

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