Posted by **Melyn** on Wednesday, April 24, 2013 at 4:17pm.

The moon is the Earth's nearest neighbour in space. The radius of the moon is approximately one quarter of the Earth's radius, and its mass is one eightieth of the Earth's mass.

a) Culculate the weight of a man with a mass of 80kg on the surface of the moon.

b) Culculate the weight of a man with a mass of 80kg when it is at a distance equal to three times the moon's radius away from the moon.

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