B Understanding Axial and Radial Moments: Definition and Importance

[Shady99]

Hello can someone explain what is axial and radial moments?

 

[BvU]

https://en.wikipedia.org/wiki/Polar_moment_of_inertia

But you saw that already, I suppose ?

 

[Shady99]

Yes...wanted some info otherwise

 

[BvU]

Thought as much. So now we come to your question: what is your question ?

 

[Shady99]

Is torque an axial or radial moment?

 

[BvU]

Torque is not a moment in the sense of the moments in the link in post #2. (You can see this from the difference in dimensions).

It is a moment in the sense of arm x force. In many languages torque and moment are synonyms.

If forced to make a choice, I would choose 'axial' instead of 'radial', but strong preference for me is on just 'moment'.

 

[Shady99]

Torque is not a moment in the sense of the moments in the link in post #2. (You can see this from the difference in dimensions).

It is a moment in the sense of arm x force. In many languages torque and moment are synonyms.

If forced to make a choice, I would choose 'axial' instead of 'radial', but strong preference for me is on just 'moment'.

Why axial and not radial

 

[BvU]

Torque is a pseudovector that points in an axial direction. So I would want to avoid the term 'radial' in its neighborhood: that suggests something that points perpendicular to the axis.

(I grant that this is a personal consideration, but perhaps others share it).

 

[Shady99]

Can you give me daily life examples of axial and radial moments for my understanding?