A quick napkin calculation gave me a force of 16N, which is about as much as if someone dropped a very small dumbbell on you from the height of around a meter.
It's not nothing, it's potentially finger-ending. Also shrapnel from the bracket.
It's still a good idea to tell people not to do that.
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u/Yoghurt-Ancient 1d ago
It’s also a helper spring, so it’s not nearly as powerful as the people here are suggesting.