Question

The meteor is falling towards the earth. If the mass and radius of the earth is 6*10^24 kg and 6.4*10^6 m respectively. Find the height of the meteor if its gravity is4m/s^2.

Answer 1

Explanation:

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