# What is the gravity inside a hollow sphere?

## What is the gravity inside a hollow sphere?

The gravitational field inside a hollow spherical shell is zero, as potential is constant inside.

### Does inside Earth have gravity?

The acceleration of gravity in Earth’s interior is determined by the density distribution in Earth. A remarkable result is that the acceleration is approximately constant all over the mantle, which amounts to about 84% of Earth’s volume.

What happens if the earth is hollow?

If any significant portion of the Earth were hollow, the average density would be much lower than that of surface rocks. The only way for Earth to have the force of gravity that it does is for much more dense material to make up a large part of the interior.

Is there zero gravity in the center of the Earth?

If you are at the center of the earth, gravity is zero because all the mass around you is pulling “up” (every direction there is up!).

## Is gravity infinite at the center of the Earth?

The solution inside (non-zero mass density) and the solution outside (zero mass density) are different but must give the same value at the radius of the surface. Assuming a uniform mass density inside, the gravitational acceleration inside is proportional to the radius and, thus, goes to zero at the center.

### Why is gravitational field zero inside hollow sphere?

Because any Gauss surface made inside the hollow sphere encloses no charge so the net flux is zero. And if the Gaussian surface is shrunk to zero dimension, the electric field is zero at that point.

Why is gravitational field zero in a sphere?

Inside the shell, the gravitational force is zero. This is because is no mass inside, the gravitational field is zero, thereby is zero.

Is gravity weaker inside Earth?

But in fact, the Earth’s core is substantially more dense than the outer layers (mantle and crust), and gravity actually increases a bit as you descend, reaching a maximum at the boundary between the outer core and the lower mantle.

## What would happen to gravity if the Earth was hollow?

Since any gravity in a hollow Earth would have to be coming from the crust, gravity would just cancel itself out, and it’s influence on you would be zero. You’d be floating back and forth in a complete darkness, forever lost inside an empty planet.

### What if the Earth was shaped like a cube?

As a result, all water, and indeed our own atmosphere would be drawn towards the centre of the faces. So the edges of the Earth would be barren rock with no atmosphere, and the centre of each face would play host to giant oceans and a very thick atmosphere, each region potentially with its own distinct ecosystems.

Is gravity stronger the deeper you go?

In short, gravity certainly exists underground, but it decreases as you go deeper. In an idealized case, gravity would decrease linearly with depth, however, a more realistic description of gravity underground is given by the PREM model, according to which gravity is at its strongest at the boundary of the outer core.

At what height gravity is zero?

Gravity can never become zero except maybe at infinity. As we move away from the surface of the Earth the gravitational force becomes weaker but it will never become zero. The gravitational force is inversely proportional to r2.

## How would gravity work on a hollow planet?

Such a statement as, “gravity inside a hollowed out planet is zero”, is scientifically unsound. The truth is that gravity “pulls” toward mass regardless of the mass’ orientation or configuration. Thus, there would also be gravity inside the hollow “pulling” toward the inner surface.