Question

What happens to a stone when it is dropped through a hole drilled through the centre of the Earth.
A) Think about the process involved, write valid .
B ) State how it happens and give reason supporting your observation .​

Answer 1

Answer:

Invalid Question

Explanation:

No Question No Answer!

Answer 2

When a stone is dropped in a hole drilled through the centre of the earth,

→ The potential energy on the stone will be zero hence the stone will go towards the centre of the earth and since the force of gravity will be zero it will reach the other side and will come to space.

A) There are multiple processes that are involved in this process. When the stone is dropped there is some simple harmonic motion on the stone which becomes zero when it reaches the centre. The gravitational pull also becomes zero at the centre, that is all the physics involved in the process becomes negligible at the centre and that is why the ball comes out into space.

B) The possible explanations can be found from the formula of gravitational force which is,

$g_d=g(1-\frac{d}{R})$

When the stone is at the centre the $d=R$ hence acceleration due to gravity is $0ms^{-2}$.

When the stone reaches the centre all factors become zero except for the mass which pushes it out into space.