Define mass and weight

Dear Student
Mass is defined as the amount of matter contained in a body. It is a fundamental quantity that all objects possess. For a particular body its mass will always remain constant irrespective of where its kept.

Its SI units are kilograms (kg).

Weight is defined as the force acting on an object under the influence of gravitational field. So it tells us the amount of gravitational acting on the object. Weight of an object is not a constant and depedns upon the strength of the force and where its kept.

It SI units are Newtons (N).

Regards