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Gravity, G = 6.67 x 10-11 N m2/kg2

a) By how much does the gravitational force between 2 objects decrease when the distance is doubled? Tripled? Increased tenfold?

b) Calculate the force of gravity on a 1-kg mass at the earth’s surface. The mass of the earth is 6x1024 kg, and it’s radius is 6.4 x106 m.

c) Calculate the force of gravity on the same 1-kg mass if it were is 6.4 x106 m above the earth’s surface (that is, if it were 2 Earth radii from the Earth’s center)

d) Calculate the force of gravity between the Earth and the moon, mass is 74 x 1022 kg. The average Earth-Moon distance is 3.8 x108 m.

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  • Category:- Physics
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