Find gravitational field at a distance of 2000 km from centre of earth. (Given Rearth = 6400 km, r = 2000 km, Mearth = 6 × 1024 kg) :
(1) 1.53 m/s2
(2) 7.12 m/s2
(3) 3.06 m/s2
(4) 1.8 m/s2
Correct option: (3) 3.06 m/s2
Explanation: