Mass v Weight
- Mass (measured in kilograms, kg) is related to the amount of matter in an object
- Weight (measured in newtons, N) is the force of gravity on a mass
- The weight of an object and the mass of an object are directly proportional
- The size of this force depends on the gravitational field strength (often called gravity, g, for short)
Examiner Tip
It is a common misconception that mass and weight are the same, but they are in fact very different
- Since weight is a force - it is a vector quantity
- Since mass is an amount - it is a scalar quantity