Question

How do you define weight of a body? What are its units?

Answer 1

1. Weight can be defined by the force with which a body is attracted towards the center of the earth.
2. Mathematically it can be expressed as - $W=m\times g$.
3. Units of force are -
   1. dyne or gram-force (gf) in C.G.S. system
   2. newton or kilogram-force (kgf) in S.I. system
4. It is a vector quantity and always acts towards the center of the earth.
5. It can be determined with the help of a spring balance.