Chapter 9

NCERT
Class 9
Science
Solutions
5. If the moon attracts the earth, why does the earth not move towards the moon ?

Question:

If the moon attracts the earth, why does the earth not move towards the moon?

Answer:

The moon and the earth both attract each other with equal force.

from the second law of Newton,

a = F/m

Here the mass of the earth is much greater than the mass of the moon (about 81 times). As a result, the acceleration produced in the earth is negligible, so the earth does not move towards the moon.

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