Question

how far away from the surface of Earth does the value of g is reduced to 4 of its value on the surface of the earth given radius of Earth =6400
km​

Answer 1

Answer:

Acceleration due to gravity g

′

=

100

4

g

s

Using g

′

=g

s

[

R+h

R

]

2

Or

100

4

g

s

=g

s

[

R+h

R

]

2

Or

R+h

R

=

10

2

⟹ h=4R=4×6400=25600 km