To be fair, contrary to Math, physics requires a lot more of intuitive understanding then math does, so this is actually quite a great test to see how a person is adapted to the envirenmental properties of the question, and not just the numbers.
@LukeAlmighty Agreed.
This one's tricky though, which is exactly why it's being showcased, and I believe the answer is 100N.
@skiizm @LukeAlmighty Consider this part of the image.
The scale isn't moving.
It might as well be tied to a wall.
Then it's obvious, it will show 100N.
Another way to think about it:
Since there is an equilibrium, that must mean that the weights are being held up by a force of 100N, so that's what the scale should show.
@ergo @coded_artist @skiizm @LukeAlmighty
The Physics Problem Students Keep Getting Wrong: Two Static Blocks Hung From a Spring Scale
https://www.youtube.com/watch?v=XI7E32BROp0
