if a passage go through the earth between north point and south point and i jump into it?

Question

will i fall into space or bound back to the earth and what happen when i reach the core???

Answer 1

You will go throught the centre, all the way to the other end of the passage, where you'll get zero velocity, and you'll start "falling" back toward the centre...

The acceleration keeps decreasing as you go towards the centre, and will be directed towards the centre.. so in the first half of the passage you'll speed up..

At the centre the acceleration due to gravity will becom zero.. but you'll have one hell of a velocity.. so you'll shoot past the centre..

Once you cross the centre, again the gravity will start building, but since it will be toward the centre, it will be in the opposite direction of your velocity.. so you'll start slowing down, till you reach the exact end of the passage..

Here, if you don't grab the edge and pull yourself out, you'll fall in again, and the process will continue...

So you'll be oscillating infinitely... unless there's air...

If there's air, you'll keep loosing energy to air resistance, and one day eventually (hopefully before you die of old age), you will stop oscillating and stop at the core of the earth..

Answer 2

You would fall past the centre a little and fall back slowly. Eventually you would stop somewhere near the core. There is no gravity there.

Air pressure and heat would kill you long before you got there

Answer 3

Assuming no air resistance, you would come out the other side right at the surface, and if you don't catch yourself, you would fall back again to the same side. The motion is the same as a pendulum. In normal air, a pendulum will eventually slow and come to a stop at the center, and so will you if you factor in air resistance.

Answer 4

For this, use the right hand rule, the position the thumb factors in the course of the rigidity, the index factors in the course of the field, and the middle finger factors in the course of the present. using that rule, the present is shifting North. the answer is d.

Answer 5

first, you would oscillate between one end and the other. your oscillations would be slowing down because of air resistance. eventually, you would come to rest in the center. long before you came to rest, the heat at the center of the earth will have incinerated you into ash.

Answer 6

Looking only at gravitational forces and not heat, you would stop in the core and the canter.