Direction of rotation of moment

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Homework Help Overview

The discussion revolves around the direction of rotation of moments in a mechanical context, specifically referencing the right-hand grip rule and its application in determining moment directions.

Discussion Character

  • Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the interpretation of moment directions and question the accuracy of the representations provided in a textbook. There is a focus on whether the arrow directions are meant to be taken literally or if they serve a different purpose.

Discussion Status

The discussion is ongoing, with participants expressing differing views on the consistency of the author's representation of moment directions. Some guidance has been offered regarding the interpretation of the arrows, but no consensus has been reached.

Contextual Notes

Participants are considering the implications of the author's choices in illustrating moments and forces, questioning the relevance of directional accuracy in the context of the material being discussed.

goldfish9776
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Homework Statement


IMO , the M2 and M1 should rotate clockwise, and the moment should point downwards based on right hand grip rule . Why the book gave in in other way ?

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The Attempt at a Solution

 

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I don't think you are supposed to take the arrow directions as accurate. They are merely indicating which entities are forces and which are couples.
 
haruspex said:
I don't think you are supposed to take the arrow directions as accurate. They are merely indicating which entities are forces and which are couples.
you mean the author just simply give the direction of moment ?
 
goldfish9776 said:
you mean the author just simply give the direction of moment ?
No, I'm saying that the author did not care about being consistent. It was not relevant to the point being made.
 

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