At what speed would Earth need to rotate before things started to 'fall off' into outer space?

Answer 1

Come on you guys, do the research before answering.

At 17 times the rotational speed then things on the equator would start to be thrown off.

Answer 2

Here on Earth, the reason we don't fall off is because we have a friend called gravity that we should be very thankful for! Gravity is the force that is constantly pulling you and everything around you towards the center of the Earth. Even though you can't necessarily feel yourself being pulled, gravity is always happening. In fact, you’d definitely know if it ever stopped because you'd suddenly find yourself floating in the air! And you wouldn't be the only one floating – gravity doesn't just keep you tied to the Earth, but everything around you, too! Gravity applies to everything and everyone on the surface of the Earth, regardless of whether you are in China, United States, Europe, Argentina or Australia. To test the theory of gravity, simply take an object, like a basketball and throw it straight up into the air. Gravity will pull it back to the surface of the Earth. Gravity is an attracting force that exists because of the mass of the Earth. The word gravity comes from the Latin "gravitas", which means weight. The force of gravity is one of the four fundamental forces of nature. Every particle of matter attracts every other particle of matter with a force proportional to the product of their masses and inversely proportional to the square of their distance apart. When written as an equation: F=(G×M1×M2) / (d^2) Where F is the force of attraction due to gravity, G is a constant called as Universal Gravitational Constant, M1 and M2 are the masses of the two objects, and d is the distance between them. Thus, according to this law you are pulling the Earth toward you and the Earth is pulling you toward it. As the mass of the Earth is much much larger than your mass, you are pulled strongly toward the Earth and this pull is called as gravity. So gravity comes from mass and the more mass an object has, the more gravity it will exert. Newtonian Law of Gravitation was considered absolute for nearly 200 years and remained undisputed, however Leverrier discovered a discrepancy in the orbit of planet Mercury which could not be explained even after considering the possibility of another unknown planet in vicinity. This particular discordance was explained by Einstein's General Theory of Relativity in 1916.

Answer 3

Wind velocity would be so great that before it's velocity reached the throw off speed every thing on the earth surface would be destroyed.

Answer 4

centrifugal force doesn't actually exist its a pseudo force (its a fake force). There is a force acting towards the center of the earth that keeps all objects on it called the centripital force.

"The centripetal force is the external force required to make a body follow a circular path at constant speed. The force is directed inward, toward the center of the circle."

Answer 5

It should start rotating backwards then it will throw things of in outer space.

Answer 6

when the centrifuge is greater than the gravity I guess. but is that even possible? Wont the rotation increase the gravity as well?

Answer 7

Would it not have to slow down before things start to "fall off" ?

Answer 8

When centrifugal force caused by "radians per second" equals one "G" or one's weight. You'll have to look for formula in your Physics book. P.S. it's pretty fast, like 50,000 MPH.

Answer 9

the earth travels at 64 000 miles p/m ,so it would have to slow down gradually before anything starts to fall off.

Answer 10

I thing, speed wich will eliminate the gravity