Sometimes there are questions in one's mind which he needs answering but those are just confusion in his own mind not any homework question or any question he read in a book. But to explain the question better that person uses diagrams and examples, and all of the community declares it a homework question.
I suggest there should be a simple rule to decide if that question is acceptable or not.
- If the questions gives a problem to the community and asks others to solve it for him it is unacceptable and considered as homework.
- If the question asks explanation of the underlying physics in a case and the user makes an effort by himself to understand it is considered a "physics problem" not a "homework question".
- Velocity of satellites greater than required velocity
This question discusses a case in which velocity of satellites gets greater than required velocity and asks what happens and why?
This question is definitely not a homework question.
A problem of thermodynamics
The text of the question goes like this:
A rigid tank contains a hot fluid that is cooled while being stirred by a paddle wheel. Initially the internal energy of the fluid is 800KJ, during the cooling process, the >fluid loses 500KJ of heat, and the paddle wheel does 100KJ of work on the fluid: >determine the final internal energy of the fluid, neglect the energy stored in the paddle >wheel Can you help me solve this?
In this question the user asks a physics problem from book or somewhere else and expects an answer which is worked solution and calculation.
It is clearly a homework question.