Weight is the force acting on an object due to gravity. It can be considered to act at the object's center of mass and can be measured using a calibrated spring-balance (newtonmeter)
How is weight calculated?
Weight (N) = mass (kg) × gravitational field strength (N/kg), or W = mg
What is the relationship between weight and mass?
Weight and mass are directly proportional to each other, which can be written as W ∝ m. As the mass of an object doubles, its weight doubles
What causes the force of gravity near Earth?
The force of gravity close to Earth is due to the planet's gravitational field strength
