Question

The weight of a body on the surface of earth is 392N. What will be the weight of this body on the plant whose mass is doubled that of the earth and radius is four times that of earth ?​

Answer 1

That depends upon the acceleration due to gravity.. Its value different in different planets

Answer 2

It depends upon G( Acceleration due to gravity) which is different in different planet. However weight is directly proportional to Mass of each body i.e. the body and the planet and inversely proportional to product of radius of both the planet and the body.

in this case the weight should be half(1/2) of the weight of the body on the earth