The first two sentences of the Homework close reason are:
Homework-like questions and check-my-work questions are considered off-topic here, particularly when asking about specific computations instead of underlying physics concepts. Homework questions can be on-topic when they are useful to a broader audience.
If I remove a few grammatically non-essential phrases it reduces to
Homework-like questions are off-topic here. Homework questions can be on-topic.
This is self-contradicting and confusing. The problem is really in the first sentence, because everything including and after "particularly" is not a modifier of the stuff before "particularly", so the first sentence says that homework questions are off topic. That being the case, the second sentence contradicts the first by reformulating the boundaries. The first sentence should probably say "...usually off topic" or "...often off topic".