Table of Contents

- 1 Is value of g same at all places on the earth?
- 2 Why does the value of g differ from place to place?
- 3 How the value of g varies?
- 4 Why does g vary from place to place?
- 5 What would be the value of g on the surface of the earth if its mass was twice as large?
- 6 Why does the value of G vary from place to place?
- 7 Does gravity change across the earth’s surface?

## Is value of g same at all places on the earth?

No. The value of ‘g’ varies from place to place. It is maximum at poles and minimum at the Equator on the surface of the Earth.

**How does the value of g vary with height from surface of earth?**

So we can say that as we move upwards, then h increases, and since it is associated with a negative sign, the value of gh decreases and becomes less than g. Therefore gravity varies with height gh=g(1−2hR), and it decreases as we move above the surface of the earth.

### Why does the value of g differ from place to place?

The variation in apparent gravitational acceleration (g) at different locations on Earth is caused by two things (as you implied). The distance between the centers of mass of two objects affects the gravitational force between them, so the force of gravity on an object is smaller at the equator compared to the poles.

**Why is the value g not the same at all places on the earth Class 9?**

Answer: No, the value of g is different at different places on the surface of earth. Due to which the radius of the earth is smaller at poles and is larger at equator. therefore the acceleration due to gravity is smaller at equator than that at poles.

## How the value of g varies?

In the first equation above, g is referred to as the acceleration of gravity. Its value is 9.8 m/s2 on Earth….The Value of g Depends on Location.

Location | Distance from Earth’s center (m) | Value of g (m/s2) |
---|---|---|

50000 km above surface | 5.64 x 107 m | 0.13 |

**Why does g varies on the surface of the earth?**

Gravity is often assumed to be the same everywhere on Earth, but it varies because the planet is not perfectly spherical or uniformly dense. In addition, gravity is weaker at the equator due to centrifugal forces produced by the planet’s rotation.

### Why does g vary from place to place?

Changes with time The gravitational potential at the surface of Earth is due mainly to the mass and rotation of Earth, but there are also small contributions from the distant Sun and Moon. As Earth rotates, those small contributions at any one place vary with time, and so the local value of g varies slightly.

**How does g vary with rotation of Earth?**

In combination, the equatorial bulge and the effects of the surface centrifugal force due to rotation mean that sea-level gravity increases from about 9.780 m/s2 at the Equator to about 9.832 m/s2 at the poles, so an object will weigh approximately 0.5\% more at the poles than at the Equator.

## What would be the value of g on the surface of the earth if its mass was twice as large?

What would be the value of g on the surface of the earth if its mass was twice and its radius half of what it is now? g2=8g1 Thus , the value of g on the surface of the earth would be eight times the present value.

**Why does g varies from place to place?**

The gravitational potential at the surface of Earth is due mainly to the mass and rotation of Earth, but there are also small contributions from the distant Sun and Moon. As Earth rotates, those small contributions at any one place vary with time, and so the local value of g varies slightly.

### Why does the value of G vary from place to place?

The value of g, the gravitational acceleration, varies from place to place, because the distance and direction (if we are talking about a vectorial g) to the center of mass changes from place to place. Places on the surface of Earth are not equidistant from Earth’s center of mass:

**Why does acceleration due to gravity (g) vary from place to place?**

Why acceleration due to gravity (g) varies from place to place on earth. Why acceleration due to gravity (g) varies from place to place on earth. On the earth surface, g is inversely proportional to the radius of the earth. This means that as radius from center of earth increases, acceleration due to gravity (g) decreases.

## Does gravity change across the earth’s surface?

(Intermediate) You are right – gravity does change across the surface of the Earth and throughout its atmosphere, due to several effects. First, there is the variation of gravity with latitude that you alluded to: you weigh about 0.5\% more at the poles than on the equator.

**Is g equal to G in physics?**

No! “G” is generally the notation used for the gravitational constant, which is thought to be equal to 6.67430e-11. “g” on the other hand is used to represent the force of gravity on the surface of a body. So g is proportional to G. But there’s a bit more to it than that: