# Distinction between Mass and Weight of an Object

## Distinction between Mass and Weight of an Object

• Understand that mass refers to the amount of matter within an object. It remains constant for a given object irrespective of its location, i.e., whether it is on Earth, Moon, or in outer space.

• Recognize that weight is the force exerted by gravity on the object’s mass. It is dependent on the gravitational field strength of the location.

• Keep in mind that the unit of mass is kilogramme (kg) while weight is measured in newtons (N).

• Know that mass can be identified through its inertia - the reluctance to change its current state of motion or rest. Greater the mass, greater is the inertia.

• Remember, weight can be calculated by multiplying the mass of the object by the gravitational field strength (g); Weight = mass x g.

• Be aware that weight, being a force, has a direction - it always acts towards the centre of the gravity of the celestial body.

• Understand that the weight of an object will change on other planets or on the moon due to differing gravitational pull, however, the mass will remain the same.

• Lastly, realise that a bathroom scale actually measures the force (weight) exerted by a body, not the amount of matter (mass) within it.