But then part b asks "how does the answer depend on mass?" and each of the silly trio gives me a talk argument, which is a polite way of saying 'bullshit', explaining how we must spin the bucket faster if the bucket or water or bucket and water has a higher mass.
Where is "m" in the answer to part a? And who screwed up these students' minds so that when the question asks "what is the mass dependence" they have to act like weasels instead of just saying "there isn't any!"
It's a good thing I don't give negative points for answers that smell bad.