Atmosohere and Gravity

I have two questions.
Firstly, our atmosphere is a layer of air which basically keeps us alive. On a flat earth, what would the atmosohere look like? My guess would be that it looks like a dome... However, if the earth is accelatating upwards at a constant speed, the air would be forced down onto the earth and eventually disappear off the sides.
This brings me to my next question: When I drop an object, it falls to the ground because of gravity. However, with the flat earth theory, the object would remain suspended until the earth cought up. Again, with gravity, if I dropped a bowling ball and a feather at the same time, the ball would drop straight to the ground while the feather would 'meander its way down and eventually land next to the bowling ball. Alternatively, if the earth was actually flat and moving up at a speed of around 8 seconds, both the feather and the ball would get 'hit by the earth at the same time...'

Feel free to explain this

For your first question, my theory is that as you move towards the edge, the temperature drops, and eventually it gets so cold that gases turn into liquids and precipitate back to the Earth and flow back toward the center.

For your second question, if the Earth is accelerating, then would it not be pushing air upwards?  This would account for light things with a lot of surface area being affected more than heavier things. 

Does this make sense? 

Does this make sense?

Not even close, but no worse than usual.

Especially this:

this would account for light things with a lot of surface area being affected more than heavier things. 

This would account for light things with a lot of surface area being affected more than heavier things.

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?  Both have identical surface areas.  Can you tell me why the brass ball hits the ground first.

I have two questions.
Firstly, our atmosphere is a layer of air which basically keeps us alive. On a flat earth, what would the atmosohere look like? My guess would be that it looks like a dome... However, if the earth is accelatating upwards at a constant speed, the air would be forced down onto the earth and eventually disappear off the sides.
This brings me to my next question: When I drop an object, it falls to the ground because of gravity. However, with the flat earth theory, the object would remain suspended until the earth cought up. Again, with gravity, if I dropped a bowling ball and a feather at the same time, the ball would drop straight to the ground while the feather would 'meander its way down and eventually land next to the bowling ball. Alternatively, if the earth was actually flat and moving up at a speed of around 8 seconds, both the feather and the ball would get 'hit by the earth at the same time...'

Feel free to explain this

Exactly.

The existence of a dome (and energy shield) would make the notion of an UA accelerator superfluous.

But the UAFE have practically taken over the FES, even though this hypothesis has been shown to be wrong multiple times.

Quote from: jroa on November 05, 2014, 05:57:06 AM

This would account for light things with a lot of surface area being affected more than heavier things.

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?  Both have identical surface areas.  Can you tell me why the brass ball hits the ground first.

If they have the same surface area and shape, then the air rushing up at the objects would affect them equally. 

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Quote from: jroa on November 05, 2014, 05:57:06 AM

This would account for light things with a lot of surface area being affected more than heavier things.

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?  Both have identical surface areas.  Can you tell me why the brass ball hits the ground first.

If they have the same surface area and shape, then the air rushing up at the objects would affect them equally.

Then why does the brass ball hit the ground first?

Quote from: jroa on November 06, 2014, 06:16:44 AM

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Quote from: jroa on November 05, 2014, 05:57:06 AM

This would account for light things with a lot of surface area being affected more than heavier things.

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?  Both have identical surface areas.  Can you tell me why the brass ball hits the ground first.

If they have the same surface area and shape, then the air rushing up at the objects would affect them equally.

Then why does the brass ball hit the ground first?

Are you asking why a brass ball hits the ground before, say, a hollow ball, like a golf ball? 

Quote from: theearthisrounddealwithit on November 06, 2014, 07:29:16 AM

Quote from: jroa on November 06, 2014, 06:16:44 AM

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Quote from: jroa on November 05, 2014, 05:57:06 AM

This would account for light things with a lot of surface area being affected more than heavier things.

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?  Both have identical surface areas.  Can you tell me why the brass ball hits the ground first.

If they have the same surface area and shape, then the air rushing up at the objects would affect them equally.

Then why does the brass ball hit the ground first?

Are you asking why a brass ball hits the ground before, say, a hollow ball, like a golf ball?

Uh... no.  He's obviously asking why the brass ball hits the ground before the polystyrene foam ball of the same dimensions.  Are you having some sort of problem interpreting simple questions jroa, or simply trying to derail the thread?

Quote from: jroa on November 06, 2014, 09:32:50 AM

Quote from: theearthisrounddealwithit on November 06, 2014, 07:29:16 AM

Quote from: jroa on November 06, 2014, 06:16:44 AM

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Quote from: jroa on November 05, 2014, 05:57:06 AM

This would account for light things with a lot of surface area being affected more than heavier things.

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?  Both have identical surface areas.  Can you tell me why the brass ball hits the ground first.

If they have the same surface area and shape, then the air rushing up at the objects would affect them equally.

Then why does the brass ball hit the ground first?

Are you asking why a brass ball hits the ground before, say, a hollow ball, like a golf ball?

Uh... no.  He's obviously asking why the brass ball hits the ground before the polystyrene foam ball of the same dimensions.  Are you having some sort of problem interpreting simple questions jroa, or simply trying to derail the thread?

Who says that the brass ball would hit the ground first? 

Another victory for the FES!

Just kidding.  Seriously, I would like to know what makes you think that the brass ball would hit the ground first.  Didn't Galileo prove this wrong hundreds of years ago? 

Coincidentally, I found this article in my local paper today concerning Galileo's experiment with falling lightweight and heavy objects.  I apologise for posting the entire report, but I couldn't extract just the video link itself...

Brian Cox films Galileo's famous thought experiment from the Melbourne AGE newspaper 7 Nov 14.

And the great man himself...

So, then, you are admitting you were wrong when claiming that the heavier ball would fall faster.  We are making progress with you.  Keep up the learning.

So, then, you are admitting you were wrong when claiming that the heavier ball would fall faster.  We are making progress with you.  Keep up the learning.

He made no such claim.  This was the question:

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?

Why don't you want to answer it?  Go on, have a go.  I dare you.

Except that you are forgetting this part. 

Can you tell me why the brass ball hits the ground first.

That experiment lacks something very important. Are we taking into account friction? Air? If there is vacuum.. both will hit floor at same time because of gravity.

If there is air friction while they fall, the brass ball would be less stopped than the little ball, that way, the bras ball will hit floor first relative to the smaller ball.

If I'm wrong, please correct me.

I think that the surface of the ball would be the determining factor, all things considered.  Assuming they have the same surface, then both balls should hit the ground at the same time.  The air pushing up on them would be equal. 

I think that the surface of the ball would be the determining factor, all things considered.  Assuming they have the same surface, then both balls should hit the ground at the same time.  The air pushing up on them would be equal.

*sigh*  Physics 101 time, jroa.  When friction due to air resistance is considered, mass does become relevant.  As you should know, F=ma, where F is force, m is mass and a is acceleration due to gravity.  Since both balls are the same size, the more dense ball will have a greater mass and therefore a greater force to overcome friction due to air resistance.

Quote from: jroa on November 07, 2014, 08:21:14 AM

I think that the surface of the ball would be the determining factor, all things considered.  Assuming they have the same surface, then both balls should hit the ground at the same time.  The air pushing up on them would be equal.

*sigh*  Physics 101 time, jroa.  When friction due to air resistance is considered, mass does become relevant.  As you should know, F=mg, where F is force, m is mass and g is acceleration due to gravity.  Since both balls are the same size, the more dense ball will have a greater mass and therefore a greater force to overcome friction due to air resistance.

Are you saying that Galileo lied? 

Are you saying that Galileo lied?

Can you—for once—please try and add something constructive to this little debate jroa?  Who (apart from you) has even suggested Galileo "lied".

And can you also give the silly one-line rhetoric a miss for a while?  It's both tiresome and non-conducive to the flow of the thread.

Quote from: markjo on November 07, 2014, 09:00:10 AM

Quote from: jroa on November 07, 2014, 08:21:14 AM

I think that the surface of the ball would be the determining factor, all things considered.  Assuming they have the same surface, then both balls should hit the ground at the same time.  The air pushing up on them would be equal.

*sigh*  Physics 101 time, jroa.  When friction due to air resistance is considered, mass does become relevant.  As you should know, F=mg, where F is force, m is mass and g is acceleration due to gravity.  Since both balls are the same size, the more dense ball will have a greater mass and therefore a greater force to overcome friction due to air resistance.

Are you saying that Galileo lied?

No, I'm saying that Galileo used balls dense enough where friction due to air resistance wasn't relevant.  Polystyrene is not dense enough to overcome this friction as readily as brass can.

Except that you are forgetting this part. 

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Can you tell me why the brass ball hits the ground first.

Why don't you want to answer it?  Go on, have a go.  I dare you.

Looks like you wouldn't take my dare.  I'm double daring you this time.

Quote from: jroa on November 07, 2014, 07:23:10 AM

Except that you are forgetting this part. 

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Can you tell me why the brass ball hits the ground first.

Quote

Why don't you want to answer it?  Go on, have a go.  I dare you.

Looks like you wouldn't take my dare.  I'm double daring you this time.

What question?  I thought that we established that balls fall at a given rate, no matter how much they weigh.  Didn't Galileo prove this hundreds of years ago? 

Quote from: JimmyTheCrab on November 07, 2014, 03:10:48 PM

Quote from: jroa on November 07, 2014, 07:23:10 AM

Except that you are forgetting this part. 

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Can you tell me why the brass ball hits the ground first.

Quote

Why don't you want to answer it?  Go on, have a go.  I dare you.

Looks like you wouldn't take my dare.  I'm double daring you this time.

What question? 

Sorry, 2 pages of must be very difficult to keep track of for a man in your condition.  Anyway it's this one:

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?

I triple dare you this time...

Quote from: ausGeoff on November 06, 2014, 10:17:05 AM

Quote from: jroa on November 06, 2014, 09:32:50 AM

Quote from: theearthisrounddealwithit on November 06, 2014, 07:29:16 AM

Quote from: jroa on November 06, 2014, 06:16:44 AM

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Quote from: jroa on November 05, 2014, 05:57:06 AM

This would account for light things with a lot of surface area being affected more than heavier things.

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?  Both have identical surface areas.  Can you tell me why the brass ball hits the ground first.

If they have the same surface area and shape, then the air rushing up at the objects would affect them equally.

Then why does the brass ball hit the ground first?

Are you asking why a brass ball hits the ground before, say, a hollow ball, like a golf ball?

Uh... no.  He's obviously asking why the brass ball hits the ground before the polystyrene foam ball of the same dimensions.  Are you having some sort of problem interpreting simple questions jroa, or simply trying to derail the thread?

Who says that the brass ball would hit the ground first?

So altitude and density count for nothing?

Quote from: jroa on November 08, 2014, 12:56:11 AM

Quote from: JimmyTheCrab on November 07, 2014, 03:10:48 PM

Quote from: jroa on November 07, 2014, 07:23:10 AM

Except that you are forgetting this part. 

Quote from: ausGeoff on November 06, 2014, 02:24:28 AM

Can you tell me why the brass ball hits the ground first.

Quote

Why don't you want to answer it?  Go on, have a go.  I dare you.

Looks like you wouldn't take my dare.  I'm double daring you this time.

What question? 

Sorry, 2 pages of must be very difficult to keep track of for a man in your condition.  Anyway it's this one:

Quote

Can you tell us which would reach the earth first when dropped from a 20-storey building jroa?  A 20cm ball of brass, or a 20cm ball of polystyrene foam?

I triple dare you this time...

I think that we can safely conclude that jroa is as incapable of providing a direct answer as sceptimtic is of providing a coherent one.

I thought that we established that balls fall at a given rate, no matter how much they weigh.  Didn't Galileo prove this hundreds of years ago?

No; Galileo didn't prove that two balls of different mass (not weight BTW, mass and weight are two different things) fall at a "given" rate.  They didn't have vacuum chambers 400 years ago in order to discount friction.  At any rate, Galileo never actually carried out his alleged experiment from the Tower of Pisa—it was only a thought experiment.

I thought that we established that balls fall at a given rate, no matter how much they weigh.  Didn't Galileo prove this hundreds of years ago?

Apparently not:

In Dava Sobel's biographical book Galileo's Daughter she recounts that the balls did not land at the same time:

    The larger ball, being less susceptible to the effects of what Galileo recognized as air resistance, fell faster, to the great relief of the Pisan philosophy department. The fact that it fell only fractionally faster gave Galileo scant advantage.