Gravity, Weight and Mass ?

Gravity is the force of attraction between any two objects that have mass. Every object in the universe attracts every other object. The greater the mass of the objects and the closer they are, the stronger the gravitational force.

Newton's Law of Universal Gravitation states: Every particle of matter attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them.

On Earth, gravity gives all objects a downward acceleration of approximately 9.8 m/s² (also written as g = 9.8 m/s²). This means a freely falling object speeds up by 9.8 m/s every second.

Gravity keeps planets in orbit around the Sun, keeps the Moon orbiting Earth, and keeps us on the ground.

Weight vs Mass

Mass:
Mass is the amount of matter in an object. It is the same everywhere. Unit: kilogram (kg).

Weight:
Weight is the force of gravity acting on an object's mass. It changes depending on the strength of gravity. Unit: Newton (N). Formula: Weight = mass × g