Question

How inertail and gravitaional masd are same

Answer 1

because normal contact force is equal to gravitational force by applying the 3rd law of Newton

every action has equal and opposite reaction

Answer 2

Explanation:

1) Inertial mass. ... This, in effect defines the gravitational mass of an object. As it turns out, these two masses are equal to each other as far as we can measure. Also, the equivalence of these two masses is why all objects fall at the same rate on earth.