You didn't seem to understand my point about slicing the single beam horizontally, so I have done that explicitly to show you the results. Below is the applied Force at the tip.
There are now two fixed supports, one for the top arm and one for the bottom arm at the left. Each one has a Reaction Force.
So the total force in X is exactly -100 N, to balance the 100 N at the tip, while the Z force reactions are equal and opposite 371.91 N on the bottom and top end faces to balance out the moment. Since they cancel each other out, at a surface that cuts through both legs, the Force has a net zero for the Z direction.
I hope this helps you understand.
There are now two fixed supports, one for the top arm and one for the bottom arm at the left. Each one has a Reaction Force.So the total force in X is exactly -100 N, to balance the 100 N at the tip, while the Z force reactions are equal and opposite 371.91 N on the bottom and top end faces to balance out the moment. Since they cancel each other out, at a surface that cuts through both legs, the Force has a net zero for the Z direction.I hope this helps you understand.
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