The measurement of the pull of gravity between the Earth and objects is called acceleration due to gravity, and it's commonly represented by the letter g.

Here's a breakdown:

* Acceleration due to gravity (g): This is the rate at which an object accelerates towards the Earth due to gravity. It's approximately 9.81 meters per second squared (m/s²) at the Earth's surface.

* What this means: If you drop an object, it will accelerate downwards at a rate of 9.81 meters per second every second. This means its speed will increase by 9.81 meters per second for each second it falls.

Important Points:

* Variations: The value of g is not exactly the same everywhere on Earth. It varies slightly depending on factors like altitude, latitude, and the density of the Earth's crust below.

* Newton's Law of Universal Gravitation: This law describes the force of gravity between any two objects. It depends on the masses of the objects and the distance between them.

* Weight: The force of gravity acting on an object's mass is called weight.

Let me know if you'd like to delve into any of these concepts in more detail!