Table of Contents

## What is unit and dimension of acceleration?

Acceleration has the dimensions of velocity (L/T) divided by time, i.e. L T−2. The SI unit of acceleration is the metre per second squared (m s−2); or “metre per second per second”, as the velocity in metres per second changes by the acceleration value, every second.

**How do you calculate the force of gravity?**

To calculate the force of gravity of an object, use the formula: force of gravity = mg, where m is the mass of the object and g is the acceleration of the object due to gravity. Since g is always 9.8 m/s^2, just multiply the object’s mass by 9.8 and you’ll get its force of gravity!

**What is dimensional formula of gravity?**

Gravitational Constant (G) = F × r2 × [Mm]-1. Or, G = [M1 L1 T-2] × [L]2 × [M]-2 = [M-1 L3 T-2]. Therefore, the gravitational constant is dimensionally represented as M-1 L3 T-2.

### Why is acceleration 9.8 for gravity?

A: Gravity (or the acceleration due to gravity) is 9.81 meters per second squared, on the surface of Earth, because of the size of Earth and the distance we are on its surface from its center.

**How do you prove gravity is 9.8 ms?**

Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2….The Value of g Depends on Location.

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

Earth’s surface | 6.38 x 106 m | 9.8 |

1000 km above surface | 7.38 x 106 m | 7.33 |

**How do you calculate gravitational potential energy in space?**

In space, it is possible to find the potential energy of gravity between two objects separated by a distance. This potential energy formula contains a constant, G, which is called the “universal gravitational constant”. Its value is = 6.673 x 10-11 (N∙m2)/kg2 .

#### What is the relationship between potential energy and gravity?

Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy. A tripling of the height will result in a tripling of the gravitational potential energy.

**What is a value of g?**

Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2.

**What is the value of acceleration due to gravity?**

9.8 m/s2

Its value is 9.8 m/s2 on Earth. That is to say, the acceleration of gravity on the surface of the earth at sea level is 9.8 m/s2.