ScienceClass 9CBSE
Q
Calculate the average density of the earth in terms of g, G and R.
A
- Soln:
g= GM
R2
M=gR2
G
Density of earth D= 𝑀𝑎𝑠𝑠
𝑉𝑜𝑙𝑢𝑚𝑒
= Gr2
GxVe
= gR2 G4πR3
3
= 3g 4µGR
g= GM
R2
M=gR2
G
Density of earth D= 𝑀𝑎𝑠𝑠
𝑉𝑜𝑙𝑢𝑚𝑒
= Gr2
GxVe
= gR2 G4πR3
3
= 3g 4µGR