Is the gravity force equal in all the places of the planet?

Answer 1

NO, it is not

The force of gravity varies slightly with the amount of and type of mass underneath you at that location. The changes are very minor and you can't feel the difference, but the National Geographic Society and other organizations have run worldwide surveys and detected the difference.

Think about it, if you are standing on a mountain range then there is huge amount of dense rock beneath your feet and that mass will generate more gravity. If you go to Death Valley, where the crust is much thinner then you have less mass underneath you so the gravity will be slightly lower.

Then there is the interior of the Earth itself. The Earth's core is not uniform or static. It has a radioactive core and a liquid center. The core itself is fairly constant, it is too tight for there to be lot of movement, but above the inner core it is liquid and always in movement. As the molten core increases in temperature then it rises and as it cools it falls these convention currents move the matter around and it doesn't have the same density as other bits. You have globs of iron mixed with globs of litter metals and gases a trapped inside the Earth. So as the molten material moves about it gives the Earth a slightly denser or less dense mass at various points. Mass determines gravity so as the mass changes in location the gravity changes with it.

The value of 32 feet/second or 9.8 meters/second that we use to calculate the power of the Earth's gravity is only an average value (but very close) when taken at sea level. Granted the air resistance has more of an effect than the gravity does, but as you increase your distance from the Earth's core the gravity field drops. Gravity has a weak attraction that extends for an infinite range, but the strength drops off with distance so if you are flying in an airplane then the gravity there is ever so smaller than the gravity at sea level.

The variations in gravity are so slight that we normally use one value for it, but this value is only true if the Earth is considered to be a single continuous mass of a uniform spherical shape. The problem is that when you use physics to calculate the values taking in account all the variables you need calculus to handle it. That's why Newton had to invent Classical Physics and Calculus.

Answer 2

No, for two main reasons.

Gravity gets weaker the farther away from the center of the Earth that you are. So, you will weigh less at the top of a mountain than at the bottom. If you were in space, you would weigh even less.

Along the same lines, the earth is not perfectly round. The equator bulges out some. So, you are farther away from the center of the earth at the equator than at the poles, and will weigh less there.

Also, the distribution of mass within the earth is not uniform. Some regions of the earth are more dense than others, based on how rock, magma, etc is distributed. Local areas with higher overall density (mass/unit volume) than others will have higher local gravity forces. So, if you were on a boat in the North Atlantic, you well could have a different weight than if you were in the Pacific, simply because the density of the earth may be different in those to regions, even though you were at the same distance from the center of the earth (sea level) in both cases.

Hope this helps,

-Guru

Answer 3

Not precisely. The gravitational force exerted by the Earth on an object depends on the object's distance from the center of the Earth. The further away an object is from the Earth, the weaker the force. Therefore, technically you'll weigh less at the peak of Mount Everest than at the base, since there's a difference in height.

The approximate gravitational force exerted by the Earth on an object near the surface is roughly the same, but not exactly the same.

Answer 4

a sturdy imaginary question on weight and mass of the article. The "weight" of a few thing in the global floor will be felt with the aid of gravitational pull in route of the middle. the burden of any merchandise turns into weightless in outer area. weight = 0 the burden of the earth and the burden of any imaginary earth turns into 0 contained in the outer area. there is distinction between Mass and the burden of the article.

Answer 5

No, I was watching the History channel yesterday and they said that at yellowstone park where the guisers and all are, there is less gravity because of underground lava and that kinda stuff.

Answer 6

No it varies. It is different at every latitude due to the equatorial buldge. It varies with altitude and ocean depth.

Answer 7

YES =)