3. What is the magnitude of the gravitational force between the
earth and a 1 kg object on its surface? (Mass of the earth is
6 x 1024 kg and radius of the earth is 6.4 x 106 m.)
4. The earth and the moon are attracted to each other by
gravitational force. Does the earth attract the moon with a
force that is greater or smaller or the same as the force
with which the moon attracts the earth? Why?
5. If the moon attracts the earth, why does the earth not move
towards the moon?
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Answers
2 ) The value of F is same for earth and the moon. Both bodies will exert the same amount of force on each other.
As per universal law of gravitation, every body attracts the other body with some force and this force is same for both the bodies called gravitational force.
3) According to the universal, law of gravitation both moon and earth attract each other with a force that is directly proportional to the product of their masses and inversely proportional to the square of distance between them.
The force of attraction of moon’ on the earth is present, but the earth does not appear to move towards the moon as the mass of the earth is large and the distance between the moon and earth is so large, even if the earth is attracted/moves towards the ,moon it is negligible, cannot be seem
