# Why does a moment have more than one part?

• 1question
In summary, the question focuses on the moment of a force and whether it has two components. The asker wonders if these components make up the net moment and if each force always has two moments in opposite directions. The solution involves decomposing the 80 N force into two vectors and adding the moments of both vectors for easier calculations. It is confirmed that this is the correct way to approach the problem.

## Homework Statement

Question 1-4 from here http://www.eng.auburn.edu/~htippur/mech3130/hw-1-solutions-2012.pdf

My question is why exactly does the moment have 2 parts from 1 force? Are those simply the components which together make up the net moment? Does each force always have 2 moments in opposite directions?

## The Attempt at a Solution

I think that the sum of the two moments makes the net moment.

1question said:

## Homework Statement

Question 1-4 from here http://www.eng.auburn.edu/~htippur/mech3130/hw-1-solutions-2012.pdf

My question is why exactly does the moment have 2 parts from 1 force? Are those simply the components which together make up the net moment? Does each force always have 2 moments in opposite directions?

## The Attempt at a Solution

I think that the sum of the two moments makes the net moment.

It's not clear what you mean when you say a moment has 2 parts. Could you specifically point out these parts?

SteamKing said:
It's not clear what you mean when you say a moment has 2 parts. Could you specifically point out these parts?

I guess I mean the components of the moment, aka -80sin45(0.1+0.3sin30) AND 80cos45(0.3cos30).

I just want to make sure that thinking of them as components of the moment, and that their sum is the net moment, is correct.
Thanks

The 80 N force is decomposed into two vectors and moments of both vectors are added, it makes calculations easier.

szynkasz said:
The 80 N force is decomposed into two vectors and moments of both vectors are added, it makes calculations easier.

That is more or less what I figured, but I wanted to make sure. Thank you.