what if a hole is drilled on the diameter of the earth and then a coin is dropped???
Manish1817:
How can you drill a hole at centre of the earth
Sry
It is a Hypothetical question.
Sry
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The coin will do simple harmonic motion with a time period of 84.6min.
doesnt it stop at the centre?
No gravitational force will pull it. When it will move the gravitational force at centre is zero but at its surface is maximum just like a pendulum doing SHM.
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