Question

why pressure in the middle of the earth is 0​

Answer 1

Answer:

The reason is that everything from the surface down ( starting with a gravity of 1 ) is pushing down towards the centre. Whilst the gravity gets less as you descend, the pressure still accumulates. resulting in high pressures as the centre despite the gravity being zero.

Answer 2

Answer:

At centre of earth, mass of earth from all direction will attract the body outwards thus each opposite force will cancel out each other, Net force will be zero.

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