A body weighs `63N` on the surface of the earth. What is the gravitational force on it due to the earth at a height equal to half the radius of the earth?

Where on the surface of the earth is the radius maximum?

A body of mass 'm' falls freely under gravity, near the surface of earth. What will be the free fall acceleration if it is falling from a height equal to R, the radius of earth?

A geostationary satellite orbits the earth at a height of nearly 36,000km from the surface of the earth. What is the potentional due to earth's gravity at the site of this sattelite? (Take the potential energy at infinity to be zero). Mass of the earth=6×10^24kg ., radius of earth=6,400km .

The value of acceleration due to gravity is maximum on the surface of the earth. Draw a graph showing the variation of 'g' with depth and height from the surface of the the earth. assume that the density of the Earth is constant.

Acceleration due to gravity is g on the surface of the earth. Then the value of the acceleration due to gravity at a height of 32 km above earth's surface is : (Assume radius of earth to be 6400 km)