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Author: SannySanny Date: Apr 27, 2008 00:53
When Sun and Earth are attracting each other why do Earth not fall on
Sun.
When we throw a big Stone in air It will Fall Back on Earth.
Simmilarly For Sun Earth is just a piece of Rock? Who do this big rock
Earth Fall onto the Sun Just like the Stones which we throw in air
just come back and hit the Earth?
Simmilarly why not the Moon fall on Earth by the Gravity attration?
Why are the planets revolving round the sun for so many years instead
of just falling onto the Sun?
When we visit Moon on a Rocket Our Rocket Just Falls on Surface of
moon So why these heavenly bodies not falling on Bigger one?
Bye
Sanny
Extreme Discussions at: http://www.getclub.com/Discussion.php
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Author: AndroclesAndrocles Date: Apr 27, 2008 01:53
This message is brought to you by Androcles
http://www.androcles01.pwp.blueyonder.co.uk/
"Sanny" hotmail.com> wrote in message
news:91fc07f0-5c11-4056-a817-bbb10ff28f61@j33g2000pri.googlegroups.com...
| When Sun and Earth are attracting each other why do Earth not fall on
| Sun.
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| When we throw a big Stone in air It will Fall Back on Earth.
If you throw it straight up it comes straight back down and hits
you on the head, so you'd better step out of the way.
If you throw it up and forwards, it still comes down but hits
someone else on the...
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Author: MeenkenMeenken Date: Apr 27, 2008 02:26
> When Sun and Earth are attracting each other why do Earth not fall on
> Sun.
>
>
> When we throw a big Stone in air It will Fall Back on Earth.
> Simmilarly For Sun Earth is just a piece of Rock? Who do this big rock
> Earth Fall onto the Sun Just like the Stones which we throw in air
> just come back and hit the Earth?
>
> Simmilarly why not the Moon fall on Earth by the Gravity attration?
>
> Why are the planets revolving round the sun for so many years instead
> of just falling onto the Sun?
>
> When we visit Moon on a Rocket Our Rocket Just Falls on Surface of
> moon So why these heavenly bodies not falling on Bigger one?
there is atlas you know,
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Author: MikeMike Date: Apr 27, 2008 03:02
On Apr 27, 5:26 am, "Meenken" wrote:
> there are/were also some people like einstein ,
>
> who say that mass dictates space how to curve, and space in his turn
> dictates mass how to move,but what kind of bullshit that is ,I don't
> know,but that cannot be true can it???
>
> greetings marten
>
Actually Newtonian physics say something similar: mass dictates
gravitational force (upon another mass) and in turn, the gravitational
force dictates how mass moves by the reaction of that gravitational
mass (third law).
There is nothing wrong with both sttatements. They produce wonderful
models of gravitational effects although they do not explain why the
effects happen in the "chicken and egg" sense you you should not worry
about that.
Mike
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Author: MikeMike Date: Apr 27, 2008 03:07
On Apr 27, 3:53 am, Sanny hotmail.com> wrote:> When Sun and Earth are attracting each other why do Earth not fall on
> Sun.
>
> When we throw a big Stone in air It will Fall Back on Earth.
[snip]
Newton first, and later others like Einstein, presented models that
unified the two phenomena you mentioned, orbits and free fall.
Actually, a free fall is an trajectory that falls short of becoming an
orbit because there is not enough mechanical energy to keep it that
way.
If you give a high enough velocity to the rock in the right direction
and you lete it free, and thus is has the right Kinetic Energy to
balance the Potential Energy, it will go into a orbit around earth.
This is what satellites accomplish after gettign escape velocity.
I think you question is so elementary that shows you did not study
introductory physics in neither high school or college level.
No proble, as long as you agree to open a book and study. Any book
Physics 101 will do it.
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Author: Dirk Van de moortelDirk Van de moortel Date: Apr 27, 2008 03:52
> On Apr 27, 3:53 am, Sanny hotmail.com> wrote:>> When Sun and Earth are attracting each other why do Earth not fall on
>> Sun.
>>
>> When we throw a big Stone in air It will Fall Back on Earth.
> [snip]
>
> Newton first, and later others like Einstein, presented models that
> unified the two phenomena you mentioned, orbits and free fall.
> Actually, a free fall is an trajectory that falls short of becoming an
> orbit because there is not enough mechanical energy to keep it that
> way.
>
> If you give a high enough velocity to the rock in the right direction
> and you lete it free, and thus is has the right Kinetic Energy to ...
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Author: Robert J. KolkerRobert J. Kolker Date: Apr 27, 2008 04:52
Sanny wrote:
>
>
> When we throw a big Stone in air It will Fall Back on Earth.
> Simmilarly For Sun Earth is just a piece of Rock? Who do this big rock
> Earth Fall onto the Sun Just like the Stones which we throw in air
> just come back and hit the Earth?
If your big rock had a tangential speed of over 18,000 miles an hour it
would not fall to earth. Consiser all those satillites in low orbit.
They are big rocks thrown by rockets.
In -Pricipia- Newton drew a diagram showing how a cannon could launch a
cannon ball that would orbit the earth without falling back to the
ground. (of course he ignored air friction to make the point).
For Sanny, it was as though Isaac Newton had never lived.
Bob Kolker
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Author: dedanoededanoe Date: Apr 27, 2008 06:50
On Apr 27, 9:53 am, Sanny hotmail.com> wrote:> When Sun and Earth are attracting each other why do Earth not fall on
> Sun.
>
> When we throw a big Stone in air It will Fall Back on Earth.
> Simmilarly For Sun Earth is just a piece of Rock? Who do this big rock
> Earth Fall onto the Sun Just like the Stones which we throw in air
> just come back and hit the Earth?
>
> Simmilarly why not the Moon fall on Earth by the Gravity attration?
>
> Why are the planets revolving round the sun for so many years instead
> of just falling onto the Sun?
>
> When we visit Moon on a Rocket Our Rocket Just Falls on Surface of
> moon So why these heavenly bodies not falling on Bigger one?
>
> Bye
> Sanny
> ...
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Author: dedanoededanoe Date: Apr 27, 2008 06:56
On Apr 27, 1:52 pm, "Robert J. Kolker" comcast.net> wrote:> Sanny wrote:
>
>> When we throw a big Stone in air It will Fall Back on Earth.
>> Simmilarly For Sun Earth is just a piece of Rock? Who do this big rock
>> Earth Fall onto the Sun Just like the Stones which we throw in air
>> just come back and hit the Earth?
>
> If your big rock had a tangential speed of over 18,000 miles an hour it
> would not fall to earth. Consiser all those satillites in low orbit.
> They are big rocks thrown by rockets.
>
> In -Pricipia- Newton drew a diagram showing how a cannon could launch a
> cannon ball that would orbit the earth without falling back to the
> ground. (of course he ignored air friction to make the point).
>
> For Sanny, it was as though Isaac Newton had never lived.
>
> Bob...
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Author: flamestarflamestar Date: Apr 27, 2008 07:20
On Apr 27, 3:53 am, Sanny hotmail.com> wrote:> When Sun and Earth are attracting each other why do Earth not fall on
> Sun.
>
> When we throw a big Stone in air It will Fall Back on Earth.
> Simmilarly For Sun Earth is just a piece of Rock? Who do this big rock
> Earth Fall onto the Sun Just like the Stones which we throw in air
> just come back and hit the Earth?
>
> Simmilarly why not the Moon fall on Earth by the Gravity attration?
>
> Why are the planets revolving round the sun for so many years instead
> of just falling onto the Sun?
>
> When we visit Moon on a Rocket Our Rocket Just Falls on Surface of
> moon So why these heavenly bodies not falling on Bigger one?
>
> Bye
> Sanny
> ...
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