Question

47. If a man weighs 60 kg on the surface of the earth, the height above the surface
of the earth where his weight is 30kg is (Assume radius of the earth is R)​

Answer 1

Answer:

so gravity will be half cause mass cant be change

so if before radius is r now the radius will be root2r bacause g =GMm/rsquare

so 6400km × 1.4 or 640 × 14 kae lena ans. aa jayega

brainliest mark karo

Answer 2

Step-by-step explanation:

g'=g/2

g/2=g/(1+h/R)²

(1+h/R)²= 2

1+h/R=√2

h/R=√2-1

h/R=1.41-1=0.41

h=0.41R

Ans:(A) 0.41 R