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An astronaut on the moon measures the ac...

An astronaut on the moon measures the acceleration due to gravity to be `1.7 ms^(-2)` . He known that the radius of the moon is about `0.27` times that of the earth . Find the ratio of the mass of the earth to that of the moon , if the value of g on the earth's surface is `9.8 ms^(-2)` .

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