Question

a metros is falling towards the earth if mass and radius of earth are6×10^24kg and 6.4×10^3km respectively. find the height of the meter from earth where its accleration due to gravity become 4m/s^2​

Answer 1

Answer:

g=

R

2

GM

Given, G=6.67×10

−11

Nm

2

kg

−2

R=6.4×10

6

m

g=9.8ms

−2

∴M=

G

gR

2

=

6.67×10

−11

9.8×6.4×6.4×10

12

≈6×10

24

kg