Question

the mass and the radius of earth are 6×10²⁴kg and 6400 km respectively. Considering Earth to be of uniform density, what will be the acceleration due to gravity at half the depth of Earth?
( Take G = 6.7×10-¹¹ N m²kg-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