Question

if r is the radius of the earth the height at which the weight of a body becomes 1/4 its weight on the surface of the earth a 2r,b r,c r/2, dr/4​

Answer 1

Answer:

R

Explanation:

At surface of the Earth, weight W

s

=

R

2

GMm

At height, h of the Earth weight W

h

=

(R+h)

2

GMm

Now,

W

h

=

4

W

s

(R+h)

2

GMm

=

4R

2

GMm

R+h

1

=

2R

1

R+h=2R

h=R