Hello all,

I had one question that I should of thought about in middle school but im 30 now.

Does the rotation of earth make us feel gravity weaker than if it wasnt rotating?

What I mean is does the rotation try to throw us off and counter some of the force holding us on?

Not detectably feel it, but there is a slight measurable difference.

Wikipedia: Earth's gravity

(The second is due to the equatorial bulge that places the surface there farther from the Earth's center.)

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The third is the transverse doppler shift of the neutrinos coming through the Earth, due to the rotating reference frame which has it's largest value also at the equator...see:http://en.wikipedia.org/wiki/Transverse_Doppler_effect

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A third rate theory forbids
A second rate theory explains after the fact
A first rate theory predicts...A. Lomonosov

I was once told that the "lightest" place on Earth is some point near the Equator in the Andes which is the highest point on the equator. I don't know what the total difference between this point and the north or south pole is, but I suspect that it is measurable.

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Yo Adrian. The Phillies won the Series.

If you're 30 now, by the time you are 40 or 50 you will begin to think that gravity has increased quite a lot since you were 30.

To be fair, the equitorial bulge does get bigger.

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Numbers are not case sensitive. (me)

Very true. When I was in high school, my body didn't even have an "equitorial bulge". Now it does.

So your saying I should donate all those pants I was hoping to wear again someday..

Well, I suppose it depends on the individual. For me, I keep them about 10 years, then when I later find them and I can’t even get my foot into them, then I give them to the local thrift store.

By the way, one time I wanted to find out if I would weigh less if I moved to the top of a tall Andes mountain somewhere along the equator. Turns out I wouldn’t even weigh an ounce less (or some small number like that) so I gave up my Andes project.

Simply answer: yes. Obviously not if you are on one of the poles, of course. The effect gets stronger as you approach the equator.

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As above, so below

Hi Mike.

Yes, the rotation of earth does counter the gravitational force slightly. Especially on the equator. At the equator the acceleration is reduced by V^2/R = about .034 meters/sec^2. So your weight is reduced by about 1/3rd of one percent. Nothing to worry about. you will not fly off. You are stuck here .

That is a good question. You are not too old to lern. I am much older.

Wo

omg the earth spins

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Stupid people are everywhere so a word to the wise if you need to say something private just talk in words with more than 6 letters.

Why do You think tranverse dopler shift has something to do with making earth gravity different? May be you do not understand the question.

Wo

Yeah! Since when?


Welcome to BAUT Mr. Napolean, Mr. Fong.

May your stay be long and fruitfull

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Gimme a minute to read through Jay's latest observations...

The "neutrino sea" is his little pet theory that he throws out any chance he gets, relevant or not!

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Any day you wake up on "the right side of the dirt" is a good day.

T. Anderson

If you travel from the pole to the equator, your weight is reduced by 0.5%. If you climb to the summit of Chimborazo, in Ecuador, which is near the equator and the farthest point from the centre of the Earth, you'll get a small additional reduction in weight. So, yes, it's a readily measurable difference: pendulum clocks run noticeably slower at the equator than at higher latitudes, for instance.

Grant Hutchison