Just to add to the main concern, that physics.meta.SE is the right place to get feedback on what constitutes policy violations:
I was one of the reviewers who voted to keep your question closed (though I did not originally vote for it to be closed). One thing that stands out is the fact that there does not appear to be a clear question in your original post. At least not in a form that is considered acceptable.
It would appear that after trying to solve a physics problem, you went over what you did then asked members to help you identify where you went wrong and what caused inconsistent results.
According to the policy of PSE, this is could be interpreted as a check-my-work question type, and is therefore off-topic. When a question is of the "check-my-work" form, the appropriate close vote reason falls under the singular category Homework-like questions and check-my-work questions. Though what may have caused your initial confusion as to why the question was closed was your thinking that it was more along the lines of "this is not homework". And most would agree it is not homework, but agree it is "check-my-work".
I suppose that if there was a separate close reason (and I certainly am not suggesting the need for such) specifically for "check-my-work" type questions, then perhaps you would not be wondering why, since this seems more specific to the close reason.
In any case, I would guess that if you sufficiently clarify what your actual question is, that might be enough to get the question reopened, and increases the likelihood of a good answer.