Moments can be written as scalar quantities, where

Note that d is the distance from the applied force to the point of interest and that the force F is the force perpendicular to the moment arm.

* The moment about point A is dependent on how much of the force \( F \) is perpendicular to the moment arm \( d \) .*

You can determine the direction of moments using the right hand rule and wrapping your fingers around where the moment is turning. The direction your thumb is pointing is the direction of the moment.
Moments are assumed to be positive when they point in the \( -\hat{k} \) direction (clockwise rotation) and negative when they point in the \( +\hat{k} \) direction (counterclockwise rotation).

* Positive and negative moment conventions.*