State three differences between mass and weight.
It is the quantity of mattercontained in a body.
Its S.J. unit is kilogram (kg)
It is constant for a body and it does not change by changing the place of the body.
It is measured by a beam balance.
It is the force with which the earth attracts the body.
Its S.I. unit is newton (N) and other unit is kilogram-force (kgf) where 1 kgf= 1ON(nearly).
It is not constant for a body, but it changes from place to place.
It is measured by a spring balance.