Determine the mass of the Earth from the known acceleration of gravity on Earth (g = 9.8 m / s2; the radius of the planet is 6400 km).

bystudin | November 15, 2020 | Education

decision
g = G * M / R ^ 2; M = g * R ^ 2 / G = 9.8m / s2 * (6.4 * 10 ^ 6m) / 6.67 * 10 ^ -11 Nm2 / kg2 = 6 * 10 ^ 24kg.

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