You have heard people say dig to China right? Well today were going to talk about something very similar… Jumping through the Earth.
Now imagine that the hot magma and rock are not a problem, and we were able to dig a whole all the way through. Should you jump in? NO!!! You would probably die due to something called the Coriolis effect . The Coriolis effect would cause you to slam in to the side of the hole making It kind of hard to get anywhere. Now, if you put the hole directly on Earth’s poles you wouldn’t have to worry about the Coriolis effect.

Coriolis effect
An effect whereby a mass moving in a rotating system experiences a force (theCoriolis force) acting perpendicular to the direction of motion and to the axis of rotation. On the earth, the effect tends to deflect moving objects to the right in the northern hemisphere and to the left in the southern and is important in the formation of cyclonic weather systems

Now that the hole is on the poles what happens? Well Earth’s gravity, on the surface, pulls us at 32 feet per second squared. Every second you fall you speed ups 32 feet, but that’s the Earth’s surface. Gravity works by mass, and mass is matter. When you’re standing on the surface of the Earth the matter is below you, but when you are falling and getting more and more surrounded by matter making gravity all around you. In the center of the Earth it would all cancel out and be zero gravity because the fore pulling on you is from all sides and equals out.
It’s not over there though. Your travelling very Fast. ¼ the way through the Earth and your going 15,000 mph! Just 21 minutes after jumping in you’ll fly by the center at 18,000 mph. Because you were going so fast; another 21 minutes later, gravity slowing you down on the way, you’ll reach the other side and stop briefly. Enough time to step out and walk away. If you didn’t step out you will continue this back and forth thing forever in a process called harmonic motion.

Harmonic Motion A motion that repeats itself in equal intervals of time. (also called periodic motion)


Sources

How Stuff Works

Vsause

Coriolis Definition

Harmonic Motion Definition