The earth puts a gravitational force on the moon the moon, Ask an Expert

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The Earth puts a gravitational force on the Moon. The Moon puts a gravitational force on the Earth. How do the magnitudes of these two forces compare? Note that the mass of the Earth is 81 times the mass of the Moon.

A) They have the same magnitude.

B) The gravitational force the Earth puts on the Moon is 81 times larger than the gravitational force the Moon puts on the Earth.

C) The gravitational force the Earth puts on the Moon is 9 times larger than the gravitational force the Moon puts on the Earth.

D) The gravitational force the Earth puts on the Moon is 3 times larger than the gravitational force the Moon puts on the Earth.

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