Gravitation is another force which acts at a distance. It is the force which exists between any two masses, attracting them towards each other. Usually it is a weak force, but if one object is massive, such as a planet, the force becomes noticeable. Gravitational force depends on the distance between objects. The closer the objects are together, the stronger the force they exert on each other.
Weight is a measure of a planet’s gravitational pull on an object. Like all forces, it is measured in Newton’s (N). The weight of an object depends on its distance from a planet and the planet’s mass. On the Earth’s surface, the force of gravity acting on a mass of 1 Kg is approximately 9.8 N. The magnitude of the force diminishes as the mass moves further away from the Earth’s surface. An object’s mass, however, remains the same wherever it.