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Calculate mass of earth taking it to ne ...

Calculate mass of earth taking it to ne a sphere of radius 6400 km. given `g=9.8 m//s^(2)` and `G=6.67xx10^(-11)N m^(2)kg^(-2)`

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Here, `R=6400 km=6.4xx10^(6)m, g=9.8m//s^(2)` and `G=6.67xx10^(-11)Nm^(2)kg^(-2)`
From `g=(GM)/(R^(2))`
`M=(g=R^(2))/(G)=(9.8(6.4xx10^(6))^(2))/(6.67xx10^(-11)) kg=6xx10^(24)kg`
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