Define absolute and gravitational units of force state relaction between them .

Define the gravitational untis of force and relate them.

State gravitational unit of work in SI.

The gravitational unit of force in the metric system is

Define the gravitational force .

Two spheres of masses M_(1) and M_(2) and separated by a distance d are situated in air and the gravitational force of attraction between them is F. If the two spheres are kept in a liquid of specific gravity 5 then the gravitational force between them will be

If masses of two point objects are tripled and distance between them is doubled , then gravitational force of attraction between them will

Explain gravitational potential at a point and gravitational potential energy of a body in a gravitational field. Establish a relation between them.