Mass and weight are different, though related, measurements of an object's properties

. Mass is the quantity of matter in an object, while weight is the force of gravity on that object

. Key Differences

• Definition Mass measures the amount of matter in an object

. Weight measures the force of gravity acting on that mass

• Units Mass is measured in kilograms (kg)

. Weight, being a force, is measured in Newtons (N)

• Variability Mass remains constant regardless of location

. Weight varies depending on the gravitational field

. For example, an object's mass will be the same on Earth and on Mars, but its weight will differ because of the different gravitational pull

• Formula Weight is calculated using the formula $$ w = mg $$, where $$ w $$ is weight, $$ m $$ is mass, and $$ g $$ is the acceleration due to gravity

Measurement

• Mass Mass is measured using a balance, which compares an object's inertia to known masses

• Weight Weight is measured using a scale, which measures the force exerted by gravity on an object