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Name: Cliff S.
Status: student
Age: 20s
Location: N/A
Country: N/A
Date: Sunday, September 15, 2002
Question:
How many miles from earth is the gravity neutral between here and the moon? Thank you for your time.

Replies:
Easily done using Newton's Law of gravitation (F = GMm/rr) if you know the mass of the earth (5.974E24 kg), the moon (7.347E22 kg) and the distance between them (3.84E8 m or 238,660 = 2.3866E5 miles). The answer is 3.46E8 m or 214,840 miles, about 90% of the earth-moon distance.

Richard J. Plano


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