Inception Question

So, when I was watching the movie, fantastic as it was, I noticed a few holes:

Why, if there's no gravity in the hotel because of the free fall in the van, does the snow fortress not have the same effect?

Does Cob. Actually spin the tip in Youduf's basement? I missed it.

And doe anyone have definitive evidence as to whether it stiopped spinning or not?

>>7
What if the conspiracy theorists are correct and 528 is actually a frequency level used to alter one's perception of earth and the reality that resides upon it by counting in base 9?

Solfeggio frequencies?