And while we are at it.....
If the alleged force of gravity was the overruling force... how can these cocktails be possible?
There should be a sludge at the bottom of the glass!
And why, when you swim in the ocean, can you defeat the AWESOME pull of the Earth's gravity and float? You should be pulled the the sea bed immediately! Think about it.
Gravity is apparently so awesome - it can even hold the MOON in orbit! Crikey!
But you can beat it by paddling your arms!
Definitely DENSITY is the acting force in these circumstances. Now throw your text books in the bin!