A man weighs `80 kg` on the surface of earth of radius `r`. At what height above the surface of earth his weight will be `40 kg`?

A man weighs 100kg on the surface of the earth of radius R. At what height above the surface of the earth, he will weigh 50 kg?

If a man weighs 90 kg on the surface of the earth, the height above the surface of the earth of radius, R where the weight is 30 kg is

If a man weighs 90 kg on the surface of the earth, the height above the surface of the earth of radius, R where the weight is 30 kg is

A body weighs 10 kg on the surface of earth. What would be its mass and weight at the centre of earth ?

The weight of a body on the surface of the earth is 10 kg. Its weight at the centre of the earth is

A body weighs 1 kg on the surface of earth. What is its mass on moon ?

A man weight 60 kg-wt at the earth's surface The radius of the earth is 6400 km. At what height above the earth's surface, his weight becomes 30 kg wt ?

If the weight of a man on the surface of the earth is 75kg, then his weight on the surface of the moon will be