Question

Assuming earth to be spherical, at what height above the north pole, value of g is same as that on earth's surface at equator?

Answer 1

Answer:

= 10.97 x 103 m = 11 km

hope it helps..

Answer 2

Assuming the required height to be much smaller than the radius of earth,

g '  =g(1−  2h /R)=g−ω  2 *R  

2gh /r =ω  2 *R

h=  (ω  2 R  2 )/2g={  (3600)4π  2 *6400000  2} / 2(9.8)(24)  ≈ 10km

Answer is 10km.