Question

A man of mass 75 kg is standing on a ground .What is the force of gravity on him?What is his weight?(radius of a earth is 6400km,mass of earth is 6×10^24)​

Answer 1

Answer:

Let acceleration due to gravity at a height h above the surface of earth be g

′

So, mg

′

=m

(R+h)

2

gR

2

or, 30=60×

(6400+h)

2

(6400)

2

So, h=6400

2

−6400=2624km