Question

Find the mass of earth if radius is 6.4×10^6m

Answer 1

g=GM/R^2

G=6.67×10^-11 Nm^2/kg^2

R = 6.4×10^6 m

g= 9.8m/s^2

Therefore; M=gR^2/G

M = 6×10^24 kg

Hope you understand

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