Question

if a tunnel is dug between any point on earth and an object is dropped into it. what would happen to the object?​

Answer 1

So, to travel overland from one location to its antipode, you'd need to travel 20,037 km. A tunnel, dug from one side of the Earth to the other would be, on average, 12,742 km. ... If you jumped into the tunnel, you'd fall down towards the center of the Earth, accelerating constantly, thanks to gravity.