[" If "R" is the radius of a planet,"g" is the "],[" acceleration due to gravity,then the "],[" mean density of the planet is given by "]

If R is the radius of a planet and g is the acceleration due to gravity, then the mean density of the planet is given by

How does acceleration due to gravity vary with mass and radius of the planet ?

The escape velocity for a planet is upsilon_e . A tunnel is dug along a diameter of the planet and a small body is dropped into it at the surface. If R is the radius of the planet and g is the acceleration due to gravity at its surface then the body will reach the centre of the planet in time

A planet has twice the values of mass and radius of earth. Acceleration due to gravity on the surface of the planet is :

If both the radius and the mean density of a planet are half the radius and the mean density of the earth, what will be the acceleration due to gravity on the surface of that planet ? Given that the acceleration due to gravity on the earth's surface =980 cm*s^(-2)