What Is The Speed Of Gravity On Earth? 

Well, the speed of gravity on Earth always has created a lot of questions. Some questions like this have found their answer and some remained a mystery. Here, I am using the word mystery because all that scientists have searched about the lowest gravity on the Earth is present at the centre of the Earth is theoretical. Because no one went to the centre of the Earth till now. In fact, gravity is an imaginary force no one can see but it is present on the Earth, and you can feel it. When you see the theory and calculations related to the gravity on Earth, there are so many terms included in it. Let’s know the speed of gravity on Earth

What Is The Speed Of Gravity On Earth? 

The speed of gravity on earth is equal to the speed of light, according to Einstein’s General Relativity

Proving it is far from simple, though, unlike light, gravity can not simply be switched on and off, and is also extremely weak. Over the years, multiple tries have been made to measure the gravity speed on the Earth using studies of astronomical phenomena, such as the time delay of light as it passes through the strong gravitational field of Jupiter. 

While the results have been broadly in line with Einstein’s prediction, they have lacked the precision needed for compelling evidence. 

In fact, it is impossible to calculate the speed of gravity on Earth in feet per second, so you need to calculate the acceleration first. And from acceleration, you can calculate the minimum or maximum speed of gravity on Earth.   

Let’s know how to calculate the gravity speed on Earth and also know what is the max speed of gravity

Calculate The Speed Of Gravity On Earth 

To calculate the speed of gravity on Earth you need to consider a falling object. You can’t directly calculate the gravity speed of the earth without a reference object. Because gravity is a force and not a linear motion. And hence you can calculate acceleration and from acceleration, you can calculate speed. 

Click here – What Is The Speed Of Turtle?

Let’s first see the acceleration due to gravity, 

So, the acceleration due to gravity on the surface of the earth is given as, 

g = GMm(R+H)2  but, at surface H = 1 

Therefore, g = GMmR2  

Here, G = Gravitational constant which is equal to 6.6734 X 10-11 m3kg-1s-2

          Mm is the total mass enclosed within radius R 

As you all know that the force of gravity on earth is not constant but varies according to the altitude. You can find the gravity at any altitude by using a formula, 

gh = g0(ReRe + h)2


             gh is the gravitational acceleration at height h above sea level.

             Re is the Earth’s mean radius.

             g0 is the standard gravitational acceleration.

Now, you know about the force of gravity on earth in newtons, let’s understand more about the gravity on earth. 

About Gravity On Earth 

Can you tell me what is gravity? The gravity on earth or the gravity of earth is denoted by g, is the net acceleration that is imparted to objects due to the combined effect of gravitation and the centrifugal force. The earth rotates in a circular motion, there is angular speed, so, angular speed of gravity on earth is  g=10 m/s2, R=6400 km, which equals 15.04108°/mean solar hour. Similarly earth, the moon also has a gravity and the moon gravity is 1.62 m/s 2     

According to Einstein’s General Relativity, gravity on earth travels at the speed of light. When you see the earth gravity limit in km, then you find that the precise strength of Earth’s gravity varies depending on location. 

Assemble more facts on different topics like these on Countspeed


How Speed Affects Gravity?

Speeding up While Falling Down
Acceleration is a change in velocity, and velocity, in turn, is a measure of the speed and direction of motion. Gravity causes an object to fall toward the ground at a faster and faster velocity the longer the object falls.

Does More Gravity Mean More Speed?

The gravitational field is really a curving of space and time. The stronger the gravity, the more spacetime curves, and the slower time itself proceeds.

What Are 5 Facts About Gravity?

Five weighty facts about gravity

  • Gravity is by far the weakest force we know.
  • Gravity and weight are not the same thing.
  • Gravity makes waves that move at light speed.
  • Explaining the microscopic behavior of gravity has thrown researchers for a loop.
  • Gravity might be carried by massless particles called gravitons.

How Does Gravity Travel?

Gravitational waves travel at the speed of light (186,000 miles per second). These waves squeeze and stretch anything in their path as they pass by. A gravitational wave is an invisible (yet incredibly fast) ripple in space. We’ve known about gravitational waves for a long time.

What Is The Speed Of Dark?

Darkness travels at the speed of light. More accurately, darkness does not exist by itself as a unique physical entity, but is simply the absence of light.

Click here – What Is The Speed Of Light In nm/s?

Is Gravity Always 9.8 On Earth?

It should be noted that the strength of gravity is not a constant – as you get farther from the centre of the Earth, gravity gets weaker. It is not even a constant at the surface, as it varies from ~9.83 at the poles to ~9.78 at the equator. This is why we use the average value of 9.8, or sometimes 9.81.

How Fast Is Gravity Vs Light?

Kopeikin and Fomalont concluded that the speed of gravity is between 0.8 and 1.2 times the speed of light, which would be fully consistent with the theoretical prediction of general relativity that the speed of gravity is exactly the same as the speed of light.

Is Gravity 9.8 Meters Per Second?

For objects near the surface of the earth, the graviation acceleration (g) is a constant and equal to 9.8 meters per second squared.


With the help of this article, you have learnt a very important topic which is the speed of the gravity of earth in detail. Gravity of earth is also known by the name of the gravitation, in mechanics, the universal force of attraction acting between all matter. The weakest known force in nature and thus plays no role in finding the internal properties of everyday matter. When you throw things upward, things automatically come down. Actually things are not coming automatically, but due to the pull force applied by the gravity of earth called gravitational force. Now, you won’t forget about the speed of gravity on earth


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What is the exact speed of gravity on Earth