Who is right Galileo or Newton?

Let in the video

The gravitational acceleration of earth = g_e
The gravitational acceleration of bowling ball =  g_bb
The gravitational acceleration of feather = g_f

Now according to Newton g_e > g_bb> g_f so the striking time of earth and bowling ball will less than the striking time of feather and earth if drop separately or at the same time.

Lol, you're about as dumb as it gets.
Ever thought about reattending Kindergarten?

Let in the video

The gravitational acceleration of earth = g_e
The gravitational acceleration of bowling ball =  g_bb
The gravitational acceleration of feather = g_f

Now according to Newton g_e > g_bb> g_f so the striking time of earth and bowling ball will less than the striking time of feather and earth if drop separately or at the same time.

How much less?

According to Newton F=MA. The force on an object near the earth is given as F=mg where g is the acceleration due to gravity. Also the force of gravitational attraction between any two bodies is given as F=GMm/r².

So if F=mg and F=GMm/r² it follows that mg=GMm/r².

The next step is where it becomes clear that there is no difference for the value of g between a bowling ball and a feather.

If mg=GMm/r² we can divide both sides of the equation by m since m is common to both sides.

This leaves us with g=GM/r²

=6.67*10^-11*5.972*10²⁴/(6.371*106)²

=9.81

I didn't include all the units but the result is either in m/s² or N/Kg. When describing acceleration due to gravity it's most common to express it in m/s².

So, g_bb=g_f=9.81m/s^2.

Faling objects get pulled all to center of mass of the whole system.

But if one of those object is for several orders of magnitude more massive than all other objects, then the pull by those smaller objects can be neglected.
Center of mass of the whole system will be very close to center of mass of the massive object, and apparently they will all just fall to the massive object.
If its mass is great enough, then the pull will be below our measuring abilities, and acceleration of small objects won't depend on their masses.

Weight will depend on mass, but it is another story.
Weight is product of acceleration and mass.
Which means we will feel different weight because of differentmasses, not because of differentr acceleration.
Acceleration is not different.

Time of falling object (without air drag) will depend on speed, and speed will depend on acceleration only. Not on weight.

Imagine two equal objects falling together.
They together have double mass (and weight), but they don't accelerate each other downwards
whether they are glued to each other (into heavier object), or separately fall side by side.

Let in the video

The gravitational acceleration of earth = g_e
The gravitational acceleration of bowling ball =  g_bb
The gravitational acceleration of feather = g_f

Now according to Newton g_e > g_bb> g_f so the striking time of earth and bowling ball will less than the striking time of feather and earth if drop separately or at the same time.

F=ma
or a=F/m
Objects with more mass will have a larger force of gravity on them yes, but they also having a larger mass end up with the same acceleration in the end.  Galileo and Newton both correct.

Remember, Newton also said an apple also attract earth due to the gravitational acceleration of an apple but is so minuscule to be noticed and hence the falling of earth towards apple is ignored – so theoretically bowling ball and earth will strike first.  - I can go into detail if the hint is not sufficient

Remember, Newton also said an apple also attract earth due to the gravitational acceleration of an apple but is so minuscule to be noticed and hence the falling of earth towards apple is ignored – so theoretically bowling ball and earth will strike first.  - I can go into detail if the hint is not sufficient

Why didn't you take your meds today?

Remember, Newton also said an apple also attract earth due to the gravitational acceleration of an apple but is so minuscule to be noticed and hence the falling of earth towards apple is ignored – so theoretically bowling ball and earth will strike first.  - I can go into detail if the hint is not sufficient

For one miniscule piece of microsecond bowling ball and Earth will hit each other earlier than marble and Earth, if Bowling ball and marble fall separately.
If they wall together, they will together pull the Earth and hit it together.

Quote from: E E K on January 28, 2018, 08:16:43 AM

Remember, Newton also said an apple also attract earth due to the gravitational acceleration of an apple but is so minuscule to be noticed and hence the falling of earth towards apple is ignored – so theoretically bowling ball and earth will strike first.  - I can go into detail if the hint is not sufficient

For one miniscule piece of microsecond bowling ball and Earth will hit each other earlier than marble and Earth, if Bowling ball and marble fall separately.
If they wall together, they will together pull the Earth and hit it together.

According to the provided video, the ball and feathers were together so the earth had only one direction to accelerate in - toward the ball and feathers. They will collide at the same time, precisely.

Let in the video

The gravitational acceleration of earth = g_e
The gravitational acceleration of bowling ball =  g_bb
The gravitational acceleration of feather = g_f

Now according to Newton g_e> g_bb> g_f so the striking time of earth and bowling ball will less than the striking time of feather and earth if drop separately or at the same time.

As Boots has pointed out, g_bb = g_f = GM/r², where M = m_e, the mass of the earth.

However, g_e = Gm/r² where m is m_bb or m_f when ball or feather are dropped individually, or (m_bb + m_f) when they are dropped together as in the video. Note that in all these cases g_e is way way smaller than g_bb and g_f.

So I don't think Newton would ever have said that g_e > g_bb > g_f as it's not remotely correct. The above does mean that if the ball or feather were dropped individually and all other things were equal then the ball would hit the ground in an immeasurably smaller time since Gm_bb/r² > Gm_f/r². I suspect Galileo probably wouldn't have realised that, so in that sense Newton was slightly more right.

Of course, Einstein was even more right when he said, as Brian Cox points out in my favourite part of that video, that the ball and feather aren't falling, they are standing still. There is no force acting on them at all.

Remember, Newton also said an apple also attract earth due to the gravitational acceleration of an apple but is so minuscule to be noticed and hence the falling of earth towards apple is ignored – so theoretically bowling ball and earth will strike first.  - I can go into detail if the hint is not sufficient

Yes, I do apologise for not reading your OP carefully enough, but have you done the calculations?
Starting with:
Mass of earth = 5.9722 x 10²⁴ kg, mass of bowling ball = 7.26 kg and mass of apple = 0.10 kg.
Gravitational constant = 6.67408 x 10^-11m³ kg^-1 s^-2, Radius of earth = 6,371,008 m.
Distance to fall = 10 m.

In the following, I have ignored any rotational component of the effective acceleration.

• For the bowling ball-earth combination:
       I get, force = 71.2928655492049 N, acceleration of the ball = 9.81995393239737 m/s² and of the earth = 1.1937 x 10^-23 m/s² and the time to fall 10 m = 1.42711927750553 s.
  
  
• For the apple-earth combination:
       I get, force = 0.981995393239737 N, acceleration of the apple = 9.81995393239737 m/s² and of the earth = 1.6443 x 10^-25 m/s² and the time to fall 10 m = 1.42711927750553 s.

I think we can safely neglect the acceleration of the earth whether they are dropped at the same time or separately. 

When comparing a bowling ball and a feather, the traces of air left in the vacuum chamber would have a much greater effect.

PS: I hope I have made no mistakes.

Although both the feather and the bowling ball fall on earth but actually earth also fall towards feather and bowling ball due their acceleration of gravities i.e. g_bb and g_f

We know g_e = GM/R^2 where M = mass of earth and R = Radius of earth

Therefore g_bb = GM/R^2 = where M= mass of bowling ball, R = radius of bowling ball. Similarly, g_f can be found the same way.

An earth falls on bowling ball at the rate of g_bb. Since bowling ball is heavier than feather, therefore, g_bb > g_f therefore earth falls on feather slowly as compared to bowling ball

Now drop both the bowling ball and feather separately from the same altitude and note the striking time. So theoretically earth and bowling will strike first. Earth and bowling ball will strike first even if dropped them on antipodal points simultaneously from the same altitude. So the acceleration of earth increases with the increase in falling mass but scientists disagree with the cancellation of gravities like earth on earth

Do the maths, calculate the difference and then tell me how you gonna measure it.
Fucking retard.

You can't measure it, but that's why we have math.
To show us what is happening below our measuring abilities, if there's enough data for calculations.

And if we know how to calculate.
Mathematicians for millennia develop methods and teach us how to understand, test and prove them.

We "fucking retards" can't learn everything over night.
That's why we ask.

"Man learns all his life."
Best thing is to learn how to learn.
To learn how to search and compare.
How to google and youtube.

Will you trust "Walter Lewin's Last Lecture", or Jeranism? :-)
(Walter Lewin has lot of nice videos.)

Although both the feather and the bowling ball fall on earth but actually earth also fall towards feather and bowling ball due their acceleration of gravities i.e. g_bb and g_f

We know g_e = GM/R^2 where M = mass of earth and R = Radius of earth

Therefore g_bb = GM/R^2 = where M= mass of bowling ball, R = radius of bowling ball. Similarly, g_f can be found the same way.

An earth falls on bowling ball at the rate of g_bb. Since bowling ball is heavier than feather, therefore, g_bb > g_f therefore earth falls on feather slowly as compared to bowling ball

Now drop both the bowling ball and feather separately from the same altitude and note the striking time. So theoretically earth and bowling will strike first. Earth and bowling ball will strike first even if dropped them on antipodal points simultaneously from the same altitude. So the acceleration of earth increases with the increase in falling mass but scientists disagree with the cancellation of gravities like earth on earth

What "scientists disagree with the cancellation of gravities like earth on earth"?

If you mean Galileo and Newton you are being totally ridiculous.
Galileo made measurements and they indicated that heavy and light objects fell at the same rate.
Newton postulated that the earth would "fall" to the apple. Where is the conflict?

Then I showed that at least over 10 m the times would identical to a far far better accuracy than anyone could possibly measure.
Both times came out to 1.42711927750553 s.

The mass of the earth is so much more than anything we could conceive that Galileo and Newton are both correct.
The moon is quite a different matter.

You can't measure it, but that's why we have math.
To show us what is happening below our measuring abilities, if there's enough data for calculations.

And if we know how to calculate.
Mathematicians for millennia develop methods and teach us how to understand, test and prove them.

We "fucking retards" can't learn everything over night.
That's why we ask.

"Man learns all his life."
Best thing is to learn how to learn.
To learn how to search and compare.
How to google and youtube.

Will you trust "Walter Lewin's Last Lecture", or Jeranism? :-)
(Walter Lewin has lot of nice videos.)

Cry me a river...
I wasn't even talking to you though.

I wasn't even talking to you though.

Why is it relevant on public forum?

Quote from: User324 on January 29, 2018, 02:48:49 AM

I wasn't even talking to you though.

Why is it relevant on public forum?

Okay, I guess the retard part fits you pretty well, too.

Quote from: Macarios on January 29, 2018, 03:29:18 AM

Quote from: User324 on January 29, 2018, 02:48:49 AM

I wasn't even talking to you though.

Why is it relevant on public forum?

Okay, I guess the retard part fits you pretty well, too.

From your point of view and according to your observation and comprehension abilities. :-)

Quote from: User324 on January 29, 2018, 03:52:44 AM

Quote from: Macarios on January 29, 2018, 03:29:18 AM

Quote from: User324 on January 29, 2018, 02:48:49 AM

I wasn't even talking to you though.

Why is it relevant on public forum?

Okay, I guess the retard part fits you pretty well, too.

From your point of view and according to your observation and comprehension abilities. :-)

No, it's a scientifically proven fact.

Quote from: Macarios on January 29, 2018, 04:02:22 AM

Quote from: User324 on January 29, 2018, 03:52:44 AM

Quote from: Macarios on January 29, 2018, 03:29:18 AM

Quote from: User324 on January 29, 2018, 02:48:49 AM

I wasn't even talking to you though.

Why is it relevant on public forum?

Okay, I guess the retard part fits you pretty well, too.

From your point of view and according to your observation and comprehension abilities. :-)

No, it's a scientifically proven fact.

Why would science be relevant on Flat Earth forum? :-)

Quote from: User324 on January 29, 2018, 04:07:04 AM

Quote from: Macarios on January 29, 2018, 04:02:22 AM

Quote from: User324 on January 29, 2018, 03:52:44 AM

Quote from: Macarios on January 29, 2018, 03:29:18 AM

Quote from: User324 on January 29, 2018, 02:48:49 AM

I wasn't even talking to you though.

Why is it relevant on public forum?

Okay, I guess the retard part fits you pretty well, too.

From your point of view and according to your observation and comprehension abilities. :-)

No, it's a scientifically proven fact.

Why would science be relevant on Flat Earth forum? :-)

Isn't science so meta that it's hovering above everything, independent of the place?

Quote from: Macarios on January 29, 2018, 04:19:19 AM

Quote from: User324 on January 29, 2018, 04:07:04 AM

Quote from: Macarios on January 29, 2018, 04:02:22 AM

Quote from: User324 on January 29, 2018, 03:52:44 AM

Quote from: Macarios on January 29, 2018, 03:29:18 AM

Quote from: User324 on January 29, 2018, 02:48:49 AM

I wasn't even talking to you though.

Why is it relevant on public forum?

Okay, I guess the retard part fits you pretty well, too.

From your point of view and according to your observation and comprehension abilities. :-)

No, it's a scientifically proven fact.

Why would science be relevant on Flat Earth forum? :-)

Isn't science so meta that it's hovering above everything, independent of the place?

It is, but Flat Eartrhers come to Flat Earth forum(s) to seek refuge from it.
Refuge from reality, observations, facts, measurements, ...
If they wanted to see the real world in whole, they wouldn't look only the part they choose and be Flat Earthers.

About 95% here are not flattards though.

All masses have gravities which can be found from F = GMm/R^2. Since both the bowling ball and feather also have masses, therefore, they have also gravities and attract thing with their gravitational accelerations g_bb and g_f.

As F = GMm/R^2 or g = GM/R^2 . This is acceleration due to gravity of earth = g_e = 9.8 m/s/s.

Put a small mass m1 on the bowling mass m2 then the gravitational force b/t m1 and m2 will be F = Gm1m2/r^2 where r is the radius of bowling ball.Thus acceleration due to gravity of bowling is = g_bb=Gm2/r^2. So earth accelerates towards bowling ball @ g_bb=Gm2/r^2.

Thus g_bb is not equal to g_e

Similarly the accelaration due to the gravity of feather can be found in the same way.

Since mass of feather is less than the mass of bowling therefore feather attaracts thing will less accelaration as compared to bowling ball and earth.

Although the striking time of bolwing ball and earth less than the striking time of earth and feather but can be ignored however if we increase the mass of bolwing ball to an asteroid then there will be a huge difference in striking timings.

So, all I am saying both Newton and Galileo are in conflict THEORETICALLY.

rabinoz: What would be the weight of earth if we put another imaginary identical earth on our earth? Both have same "g" will they cancel each other according to newtons third law of motion

Your mammas so fat, objects fall to her, not the Earth

Also, according to Newton, the object you think is falling to earth is at the same time getting 'pulled' by our sun, or the black hole in the center of our galaxy, or the jiggling cahoonas of an alien babe in the Triangulum galaxy. To be frank, there are too many variables to conduct a real life experiment. If you go by numbers, you have to pretend that nothing apart from the Earth, the feather and bowling ball exists, and even then, the feather will float away because its light enough to get picked up by the wind

All masses have gravities which can be found from F = GMm/R^2. Since both the bowling ball and feather also have masses, therefore, they have also gravities and attract thing with their gravitational accelerations g_bb and g_f.

Everyone in this thread totally gets that. Why do you feel the need to keep saying it over and over again as though you're saying something new?

Are you not able to follow this thread very well?

Quote from: E E K on January 29, 2018, 02:15:16 PM

All masses have gravities which can be found from F = GMm/R^2. Since both the bowling ball and feather also have masses, therefore, they have also gravities and attract thing with their gravitational accelerations g_bb and g_f.

Everyone in this thread totally gets that. Why do you feel the need to keep saying it over and over again as though you're saying something new?

Are you not able to follow this thread very well?

As I have already scientifically proven:
He's a retard.