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No, the force of gravity is not the same everywhere on earth. There are subtle differences between the force of gravity on the surface of the earth depending on location. As the earth is what is called an oblate shperoid with a bit of a bulge around the equator (because of its rotation), the poles are actually a bit closer to the center of gravitation of the earth. That means that, in general, a person would weigh a bit more at the poles than at the equator.

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13y ago
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14y ago

The acceleration due to gravity is not very constant. There are measurable differences at the equator (where it's a bit lower) and the poles, and altitude also has an effect.

But for most routine calculations, you can use 9.8 m/s2. Taken to five decimal places, it's 9.80665 m/s2.

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13y ago

There is a gravitational constant in the universe, but the force exerted by gravity is not the same everywhere. That's because gravity is directly proportional to mass. A person who weights 200 pounds on earth would weigh about a bit over 33 pounds on the moon. The mass of the individual has not changed, but the effect of the gravity of the earth is much greater than that of the moon (because of the difference in their gravities). That is what accounts for the difference in weight of one 200-pound person.

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14y ago

Two reasons: 1. Different distances from the Earth's center; 2. A "centrifugal force" that counteracts gravity in part.

Two reasons: 1. Different distances from the Earth's center; 2. A "centrifugal force" that counteracts gravity in part.

Two reasons: 1. Different distances from the Earth's center; 2. A "centrifugal force" that counteracts gravity in part.

Two reasons: 1. Different distances from the Earth's center; 2. A "centrifugal force" that counteracts gravity in part.

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12y ago

Yes. No matter where you are, the force of gravity between two objects is always

F = G m1m2/R2 .

Since the planets all have different masses and different sizes, a test mass ...

such as your body or a standard laboratory rock ... will have a different weight

on each planet.

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14y ago

No, it varies by about 0.01 Nkg-1 (possibly less) between the poles and the equator, due to the extra distance there and the higher speed.

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14y ago

Two reasons: 1. Different distances from the Earth's center; 2. A "centrifugal force" that counteracts gravity in part.

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Q: Why is the force of gravity not exactly the same everywhere on Earth's surface?
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