Question

Take g=9.8ms^-2 on the surface of the earth, massof the earth (M)=-6 × 10²⁴kg, radius of the earth (R)=6,400km​

Answer 1

Answer:

M= mass of earth 

R= radius of earth =6400km=6.4×106m

g1= acceleration due to gravity on the surface of earth =9.8m/s2

h= height above the surface of earth 480km=0.480×106m

g2= acceleration due to gravity above the surface of earth=?

acceleration due to gravity on the surface is given

g1=R2GM----------------------------(1)

acceleration due to gravity above the surface is given:

g2=(R+h)2GM------------------(2)

g1g2=R2GM(R+h)2GM

g1g2=(R+h)2R2