what would happen if earth spins faster.?

Question

what would happen if the would start rotating at high speed. is it possible that objects would be thrown out from earth. but in the equation of gravity i.e. g=mass of the two objects/ square of the distance between them, then where does the centrifugal or centripetel force os in picture over here. if centrifugal force had to act then why does not the gravity acts at the north/south pole higher than at the equator , regarding to the fact that earth rotates at a tangential speed of 20,000 kmph at equator.

Answer 1

There would be many more days in a year and since the earth also wobbles, there would be many more but much shorter milder seasons in a year. As it is now, I believe the earth tilts on its axis about 5 degrees of center meaning the spinning rotation and wobble are slowing down. Therefore, a high speed rotation is indicative of the earth's rotation billions of years ago.

Answer 2

To find the speed of rotation at which you fly off at the equator:

centrifugal force and gravity are equal

m * 4pi^2 * f^2 * r = m * g

f being the frequency of rotation
r: distance to the center = 6,370,000 m in case of the equator
g: 9.8 m/s^2

thus

f= 1/2pi * sqr(g/r) = 0.000197/s = 1/5060 s

Thus, if the earth rotates faster than once every 5060 seconds (1h24 min) you fly off at the equator

The tangential speed would be 2pi*r/1.41 h = 28,400 kmph

At 20,000 kmph you don't fly off, but you would feel a lot lighter

Answer 3

Short answer: Nothing. Gravity, length of orbit, weight, orbit velocity (around the sun), etc do not depend on how fast the planet spins. As long as it doesn't spin too fast to "throw" us off, or too slow for us to burn under the sun, basically it has no effect.

Long answer: But then you take into account things such as the gravitational pull of the moon, which results in high and low tides, the sun, changes in time, seasons, and the slight differences it will have on other things, such as wind and ocean movement, earth's interior, etc, it will have an effect which I personally do not want to find out.

Answer 4

the effects of gravity would increased so say normal weight of human is 150 pounds would feel like 300 pounds if speed was doubles, however if the speed was say increased x10 it is possible that objects could spin off into space yet the atomsphere in theory would also increase pressure downward thus not allowing items to fly out into space

Answer 5

the effects of gravity would increased so say normal weight of human is 150 pounds would feel like 300 pounds if speed was doubles, however if the speed was say increased x10 it is possible that objects could spin off into space yet the atomsphere in theory would also increase pressure downward thus not allowing items to fly out into space.

Answer 6

see wat happens here

earth is attaracting every object towards its center with a constant acceleration of g = 9.8m/s^2, which is independent of mass(see i have written acceleration) & w (rotational speed)

now since earth is rotating, centrifugal force (which is dependent on rotational speed) act on each body & tries to throw away every thing away ,it is actually acting still also but its value is priety small.

now coming to your question if earth start rotating faster the value centrifugal force will increase, If earth rotates one round in 1.4 hours or less then we all will be thrown out thats sure

w^2 R= g.

Answer 7

hey friend,if the earth rotates at high speed then there are two possibilities either the earth would be thrown out of the milky way ,or we would be thrown out of the earth due to lack of centripetal force.
According to Newton's shell law the gravity at the centre of the earth is higher than it is at the poles,if you want to understand it in abetter way then jus refer to newtons shell law.
hey your question was challenging ask some more of these!

Answer 8

Maybe there're only 23 hours in one day!

Answer 9

the faster you move through space the slower you age (e=mc2)

Answer 10

I would just say that it won't do us any good.