Planets DONT orbit around the centre of sun.

[50cent]

BARYCENTER anybody?

I hope ppl here know that it's not the sun that the planets in our solar system revolve around but the combined CG of sun and each planet.
Infact even the sun revolves around this so called BARYCENTER.
Since most of the planets are tiny, combined CG of every planet and sun lies very close to the Center of sun but not in case of Jupiter which is a giant planet. Jupiter is almost twice as large as the total planets combined.
So in case of Jupiter the combined CG of sun and Jupiter is at the surface of the sun and not exactly at the Center.

Be assured that moon too follows this same principle while revolving around Earth. The BARYCENTER in this case lies about 1700 km (approx) below the earth.



View attachment 321838



Trivia:
Our planet Earth doesn’t even orbit where the barycenter currently is. It orbits where it was approximately 8 mins ago. If the sun suddenly vanished, we would continue to our orbit it for another 8 minutes before shooting off on some random tangent because gravity isn’t instantaneous, it propagates at roughly the speed of light.


@thesolar65 @anant_s @Rain Man

Earth being round is also a lie many people say if earth was billion years old than today date will not be in early 2000 years it would be in 4 billion 100 million years today date

 

[Anubis]

already said so.



What has that to do with my facts?

Congratulations!

 

[XenoEnsi-14]

Earth being round is also a lie many people say if earth was billion years old than today date will not be in early 2000 years it would be in 4 billion 100 million years today date

Lookie at what I found @Levina .

 

[war&peace]

Yes, lala @Levina that's true claps for you

Basically, the Newton's laws of motion should also be interpreted like that

I have a question for pdfians and let's if any one can answer that correctl, I would be really surprised if any Indian will be able to give me the correct answer (especially the ones who did not study abroad), not to offend you but to instigate you enough to try to answer

Problem Description
Acc. to Newton's third law of motion, Every action has action that is equal in magnitude and opposite in direction, in customary mathematical notation

F_12 = - F_21​

Where F_12 and - F_21 are action and reaction of forces respectively.

So the question is an apple hanging on from the tree must exert the same amount of the forces on the Earth as the latter exerts on the former, then why Apple falls towards the earth but the Earth does not seem to rise towards the Apple...What is your explanation for this apparent anomaly ?

(Hint, Barycenter like explanation and the answer lies in classical Newtonian Mechanics and no need to resort to the theory of relativity or Quantum Mechanics)

 

[ebrahym]

Why weird?
I thought it was apt.
Doesn't it break the conventional thought process of planets revolving around the sun?
Infact sun and planets orbit each other so do the moon and Earth.

well because sun is not only in the CG of earth but of other planets as well ... which neglects the movement of sun

because gravity isn’t instantaneous, it propagates at roughly the speed of light.

i would likee to know more about "Speed of Gravity though"
i've never heard it before

 

[CriticalThinker02]

Lookie at what I found @Levina .

He's most likely trolling.

 

[ebrahym]

@Levina never mind i've just googled it got my answer

 

[Sneaker]

But since sun's orbit is entirely with in orbits of all other planets, isn't it correct to say planets do revolve around the sun?

 

[Anubis]

But since sun's orbit is entirely with in orbits of all other planets, isn't it correct to say planets do revolve around the sun?

Its technicalities...nothing orbits around anything....everything orbits around a barycenter between that object and the other object it is supposed to be revolving around...a perfect revolution would require the barycenter to be exactly at the center of gravity of the bigger object.

 

[911]

Yes, lala @Levina that's true claps for you

Basically, the Newton's laws of motion should also be interpreted like that

I have a question for pdfians and let's if any one can answer that correctl, I would be really surprised if any Indian will be able to give me the correct answer (especially the ones who did not study abroad), not to offend you but to instigate you enough to try to answer

Problem Description
Acc. to Newton's third law of motion, Every action has action that is equal in magnitude and opposite in direction, in customary mathematical notation

F_12 = - F_21​

Where F_12 and - F_21 are action and reaction of forces respectively.

So the question is an apple hanging on from the tree must exert the same amount of the forces on the Earth as the latter exerts on the former, then why Apple falls towards the earth but the Earth does not seem to rise towards the Apple...What is your explanation for this apparent anomaly ?

(Hint, Barycenter like explanation and the answer lies in classical Newtonian Mechanics and no need to resort to the theory of relativity or Quantum Mechanics)

Well it does but acceleration is very less although earth and apple initially both in motion due to inertia.

F= G m1m2/rsq = m1a1 = m2a2, where mass of earth is m2 acc a2, apple m1 acc a1 so a1 = F/a1 => a1 = m2a2/m1 . Now since acc of apple is directly proportional to mass of earth which is way way higher than apple hence.....

Idk how barycenter comes into this? Is this correct or other explanation.

 

[X-2.]

BARYCENTER anybody?

I hope ppl here know that it's not the sun that the planets in our solar system revolve around but the combined CG of sun and each planet.
Infact even the sun revolves around this so called BARYCENTER.
Since most of the planets are tiny, combined CG of every planet and sun lies very close to the Center of sun but not in case of Jupiter which is a giant planet. Jupiter is almost twice as large as the total planets combined.
So in case of Jupiter the combined CG of sun and Jupiter is at the surface of the sun and not exactly at the Center.

Be assured that moon too follows this same principle while revolving around Earth. The BARYCENTER in this case lies about 1700 km (approx) below the earth.



View attachment 321838



Trivia:
Our planet Earth doesn’t even orbit where the barycenter currently is. It orbits where it was approximately 8 mins ago. If the sun suddenly vanished, we would continue to our orbit it for another 8 minutes before shooting off on some random tangent because gravity isn’t instantaneous, it propagates at roughly the speed of light.


@thesolar65 @anant_s @Rain Man

Okie

 

[war&peace]

Well it does but acceleration is very less although earth and apple initially both in motion due to inertia.

F= G m1m2/rsq = m1a1 = m2a2, where mass of earth is m2 acc a2, apple m1 acc a1 so a1 = F/a1 => a1 = m2a2/m1 . Now since acc of apple is directly proportional to mass of earth which is way way higher than apple hence.....

Idk how barycenter comes into this? Is this correct or other explanation.

Bang on Elektra aap ka hua

F = m_e * a_e = m_a * a_a = m_a * g
a = F/m = > a_a = w / m_a and a_e = - w / m_e ​

just one mistake in your answer is the sign of acceleration. One of them should be negative as to comply with third law of motion

It has have the similarity with Barycenter in terms of understanding, as people think planets revolve around the Sun, is infact wrong as the planets revolve around the Barycenter and similarly, people think Apple falls towards the earth while earth does not...Actually the Earth also moves but the accelerations is infinitesimally small that it can't be observed.

 

[CriticalThinker02]

Its technicalities...nothing orbits around anything....everything orbits around a barycenter between that object and the other object it is supposed to be revolving around...a perfect revolution would require the barycenter to be exactly at the center of gravity of the bigger object.

Is Earth's orbit circular or elliptical with respect to the barycenter?, as it's elliptical with the Sun.

The title of this thread should be "Planets do not orbit around the center of the Sun."

 

[911]

Bang on Elektra aap ka hua

F = m_e * a_e = m_a * a_a = m_a * g
a = F/m = > a_a = w / m_a and a_e = - w / m_e ​

just one mistake in your answer is the sign of acceleration. One of them should be negative as to comply with third law of motion

Yes if you go into technicalities like textbooks

 

[Anubis]

Is Earth's orbit circular or elliptical with respect to the barycenter?, as it's elliptical with the Sun.

It is still elliptical...the reason is the velocity(also momentum) at which earth was at the formation of our solar system was higher than the required velocity of a circular orbit.
Perfect circular orbits are nearly impossible in a natural system. Because the momentum has to be precise and there can be no other object around that could have any gravitational effect on any of the bodies.