Explain how the knowledge of `g` helps us to find
(i) mass of earth and
(ii)mean density of earth?

Write an equation for the mean density of the earth.

Find the expression for mass of earth.

Mass And Density On Earth

Derive expression to find the density of earth.

The escape velocity of a body from the surface of the earth depends upon (i) the mass of the earth M, (ii) The radius of the eath R, and (iii) the gravitational constnat G. Show that v=ksqrt((GM)/R) , using the dimensional analysis.

What is the relation between the mean density of the earth and G ?

Explain how the mass of the Earth can be estimated from the knowledge of G?

The value of acceleration due to gravity 'g' on the surface of the moon with radius 1/2 that of the earth and same mean density as that of the earth