Define gravitational potential and its unit.

Define gravitational potential and gravitational potential energy.

Define gravitational constant G.

The gravitational potential due to earth at infinite distance from it is zero. Let the gravitational potential at a point P be -5 J kg^(-1) . Suppose, we arbitrarily assume the gravitational potential at infinity to be +10 J kg^(-1) , then the gravitational potential at P will be

Assertion : Gravitational potential and gravitational potentail energy, both are related to the work done by gravitational force in the gravitational field Reason : Gravitational field strength is related to the gravitaional force in gravitational field.

Let V and E denote the gravitational potential and gravitational field at a point. It is possile to have

A uniform spherical shell gradually shrinks maintainig its shape. The gravitational potential at the centre

The gravitational potential at the centre of a square of side a when four point masses m each are kept at its vertices will be

Assertion : If gravitational potential at some point is zero, then gravitational field strength at that point will also be zero. Reason : Except at infinity gravitational potential due to a system of point masses at some finite distance can't be zero.

A hollow spherical shell is compressed to half its radius. The gravitational potential at the centre