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The acceleration due to gravity near the earth's surface is 9.8 m/s2, and theearth's radius is 6,400 km. From this data calculate the mass of the earth. Use anyuniversal constant if required. |
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Answer» we know g = GM/R² where g = acceleration due to gravity G = Gravitational constant M = mass of earth R = radius of earth g = GM/R² M = gR²/G M = 9.8 x 6.4 x 10^12 / 6.67 x 10 -11 M = 6.018 x 10^24 kg |
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