fyl2u
Striker
What is the fabric of spacetime?
A stretchy polyester/latex blend. Similar to the stuff they make football shirts out of nowadays.
To have a force you need something to offer as a force to accelerate a mass.
Ah, I see you've finally decided to acknowledge Newton's THIRD law, "Every object will remain at a state of rest (or uniform motion in a straight line) unless acted upon by a net external force".
What is it and how does it work?
It is gravity, and it works in the way I just described.
How?
That's how.
But not great enough to stop a helium balloon from rising above, right?
The helium balloon is lighter than air, so when you release it what happens is that the gravity of the planet has a greater pull on the air above it and around it than it does on the balloon itself (in exactly the same way gravity has a greater pull on water than it does on a bubble of air travelling through the water), and so the air rushes down and past the balloon, forcing the balloon upwards (in exactly the same way as the water rushes downwards past the bubble of air, forcing the bubble upwards).
Your ball cannot offer a foundation for the atmosphere. It's unworkable.
My ball doesn't need atmosphere. Gravity doesn't require atmosphere; it works in exactly the same way regardless of whether atmosphere is present or not.
Towards the floor on a globe would be to fall off.
To fall towards the floor on my Earth is to fall into a container and find its level. Simple.
Not if your container is a ball.
Pour water onto a ball while standing on a globe earth, and gravity will pull the water off the ball onto the floor.
Pour water onto a ball while standing on your lemon-squeezer earth, and atmospheric stacking will force the water off the ball onto the floor.
In both cases, the water falls off the ball and onto the floor.