Question

the weight a substance on the earth

Answer 1

weight on the earth =mg(m=mass of body and g=gravity of earth)

Answer 2

The weight of a substance on earth depends on the product of the mass and the gravitational force acting on the body . The weight of a substance is the force with which Earth pulls a body towards its centre.

Weight = Mass × Gravity.

Gravitational force is constant at 9.8 m/s^2