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September 20, 2014

September 20, 2014

Posted by **Hannah** on Monday, May 3, 2010 at 12:29pm.

calculate the mass of the earth.

- Physics -
**drwls**, Monday, May 3, 2010 at 12:43pmUse the weight and mass m to get g = 9.8 m/s^2. Then use

g = G m M/R^2 to get the earth's mass M.

G is the universal gravity constant of Newton. Look it up.

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