Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will

The acceleration due to gravity at a height at a height 1 km above the rearth is the same as at a depth d below the surface of earth. Then

A satellite of mass m is orbiting the earth (of radius R) at a height h from its surface. The total energy of the satellite in terms of g₀, the value of acceleration due to gravity at the earth's surface, is

Starting from the centre of the earth having radius R, the variation of g (acceleration due to gravity) is shown by