Question

if the gravitational potential in the surface of the earth is Vo, then potential at a point at height half of the radius of earth is
1)Vo/2
2)2/3Vo
3)Vo/3
4)3Vo/2

plz answer with proper explanation ​

Answer 1

Vo=GM/R

and at height H=R/2

r= R+R/2=3R/2

V=GM/r= 2GM/3R= 2Vo/3

mark me if you have understood