Don't come on here spouting off about being some genius of a fucking airline pilot and then try to pull some fucking shit out your ass comparison between a tennis ball and the earth, claiming if the tennis ball moves at one revolution per day no water would fly off...
The tennis ball IS SMALLER and the rotational speed would by necessity be FASTER you tremendous fucking dick.
GTFO with your stupidity.
Go back to the fucking lounge in the airport,cop a couple of more drinks, and never post such ignorance again.
Gosh, that was immature.
I brought up the experiment of the water and tennis ball, which I have seen before in a vapid attempt to demonstrate that if the earth were spinning we would all go flying off into space, only to demonstrate that many of the FE attempts to refute a round Earth use analogies that are not scaled correctly. Like a tennis ball spinning at 1000 RPM, or a pilot having to noticeably "dip" the airplane every few minutes.
So first: the tennis ball. Forget about the tennis ball. You wonder why we don't feel motion spinning at the equator at 1000 m/s? Because everything around you is spinning at the SAME SPEED. The ground, the air, the grass, the water. Try this: drive a car on the freeway with the windows rolled up. Stick your hand next to the window. You won't feel anything, because everything in the car is moving at the same speed. There is no howling wind, it feels as if you are still. (Apply a force, like a turn, or acceleration/deceleration, and you will feel the motion, but once the car returns to a steady state of motion, you will feel nothing again. Don't bother with the video of the pickup filled with water, it was all over the place, and the forces were in constant change.)
Now, roll down the window. You feel the air - it's called DRAG - pushing against your hand. That is what FE theorists expect to feel if the Earth were rotating, but it would require an atmosphere that is NOT rotating. The rotating Earth, four billion years ago, created friction with the lower layers of the primordial atmosphere, and that DRAG caused the atmosphere to rotate with the Earth. The upper layers began to rotate because of DRAG. I have demonstrated that DRAG is a real thing in a gas. This is why the atmosphere rotates. There is nothing above it to create DRAG in the opposite direction to slow it down, and because an object in motion (the atmosphere) remains in motion it will always rotate with the Earth.
Now, about the gyroscope. If airplanes were equipped with the toys you showed images of we would all be dead. Fortunately, aerospace engineers know that the earth is round, so they created a means to keep the gyro upright. When an airplane powers down, the gyro tumbles and comes to rest in any odd position, like this.
If we were to fire up the plane and there was no means to erect the gyro, it would always look like this, and be useless for flight. But engineers designed "vanes" in the base of the gyro to allow airflow to pass. If the gyro is tipped, more air is forced out in one direction, which pushes the gyro in the opposite direction. It keeps wobbling like this until it reaches equilibrium where air is moving through the vents equally. The vents are kept in position because of gravity, so this self erecting mechanism will always keep the gyro upright in relation to the ground beneath, and it will follow the curve of the earth because gravity always works perpendicular to the surface of the earth in any given location.
Here's a video of a gyro stabilizing in the upright position. You can see the wobble as the air is pushing the gyro around until it reaches equilibrium. The view is of the back side.
" class="bbc_link" target="_blank" rel="noopener noreferrer">There were other questions in the last 24 hours, but I don't have time right now, I'll address them later.