All Textbook Topics - Forces introduction - Force Arrows - Force arrows must have an arrow head
Force arrows must have an arrow head
Forces are always in a specific direction, for this reason, the arrows representing them must have an arrow head.
![](https://cdn.figureoutphysics.com/text/1578417453XtKUSOoeCugqPfcQ16IJazdh8Tkwib.png)
Forces in diagrams without arrow heads do not have a direction and so do not properly represent a force.
Note that all the forces in the diagrams above have an arrow head, and there is not gap between the arrow head and the arrow.
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