Gravitation Tes...

The variation of g with height or depth (r) is shown correctly by the graph in the figure (where R $$=$$ radius of the earth ), 

An object is dropped at the surface of the earth from the height of $$3600$$ km. Calculate the ratio of the weight of the body at that height and on the surface of the earth.

Where will g be greatest when one goes from the centre of earth to an altitude equal to radius of earth?

SI unit of G is $$Nm^{ 2 }{ kg }^{ -2 }$$. Which of the following can also be used as the SI unit of G?

If R is the radius of the earth and g is the acceleration due to gravity on the earth's surface, then mean density of the earth is

What will be acceleration due to gravity on the surface of moon if its radius is $$\frac { 1 }{ 4 } $$th the radius of the earth and its mass is $$\frac { 1 }{ 80 }$$th the mass of the earth?  

SI unit of G is.

At what height, is the value of $$g$$ half that on the surface of earth? ($$R =$$ radius of the earth) 

The value of g near the earth's surface is.

The magnitude of acceleration due to gravity at an altitude 'h' from the earth is equal to its magnitude at a depth 'd'. Find the relation between 'h'and 'd'. If the 'h'and 'd' both increases by $$50$$ %, are the magnitudes of acceleration due to gravity at the new altitude and the new depth equal.