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Grade 11IIT JEE Entrance Exam

Assuming the earth to be a homogeneous sphere of radius R, its density in terms of G (constant of gravitation) and g (acceleration due to gravity on the surface of the earth)

Profile image of simran wani
10 Years agoGrade 11
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1 Answer

Profile image of Vikas TU
6 Years ago
Using the relation,g = GM/R^2
Or M=gR^2/G−−−(i)
And, Mass = Volume×density
M = 4/3πR^3×ρ
or ρ=3M/4πR^3
Using (i),ρ = 3 g/4πRG