Question
When the object falls on the ground, the earth moves up. Why the earth’s motion is not noticeable?
OR
If the force of gravity between the earth and the body is same and mutual, then does the body fall towards the earth and the earth does not move towards body?
Solution
When a body falls on the ground, both the body and the earth move towards each other. But the ratio of distance travelled by each is inversely proportional to the mass.
i.e.,
where s, S are distances travelled by the body and the earth.
Since, M>>>m
∴ s>>>S
Therefore motion of the earth is not noticeable.
i.e.,
where s, S are distances travelled by the body and the earth.
Since, M>>>m
∴ s>>>S
Therefore motion of the earth is not noticeable.
