A rod is attached to a wall in such a way it can swivel. In this case: In which direction does the force (of the wall on the rod) point to?
Here are two examples (see under attached files), but the the direction of the force is different. Why? Is maybe one of the pictures wrong?
In first example I drew the force with blue as I would draw force diagram.
Also: What is the recipe here? How do we determine the direction?