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Note: You mass never changes

Quote that when you are on a different planet, it means that the gravity changes and weight is the amount of gravity is pulling on the object or body

Mercury- 3.77m/s/s (-62.2% change compared to Earth's)

Venus- 8.76 m/s/s (-9.4%)

Earth- no change, same

Mars- 3.71 m/s/s (-62.1%)

Jupiter- 24.78 m/s/s (+252.2%)

Saturn- 10.44 m/s/s (+106.5%)

Uranus- 8.69 m/s/s (-11.3%)

Neptune- 11.15m/s/s (+113.7%)

Pluto- 0.65m/s/s (-93.3%)

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11y ago
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14y ago

The number depends on what planet and what person.

In order to give you a number, we'll take the example of the earth and me.

Mass of earth: 5.97 x 1024 kg

Mass of me: 85.3 kg

Mass of earth = (5.97 x 1024 / 85.3) = 7.0008 x 1022 (rounded)

The mass of the earth is 70,008,000,000,000,000,000,000 as much as my mass. (rounded)

(Actually 1 less, because my mass is included in the earth's mass.)

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14y ago

Other things being equal, you will weigh more on a more massive planet. However, the density of the planet, or its diameter (whichever of the two you prefer to concentrate on - more diameter means less density) also play a role. For example, on the "surface" of Saturn (that would be the upper atmosphere - the atmosphere just gets denser and denser as you go inside) you would weigh less than on Earth, even though Saturn is much more massive than Earth. This is related to Saturn's extremely low density.

To get specific numbers, remember the law of gravitation - the force of gravitation is proportional to the masses involved, but it is also inversely proportional to the square of the distance. Use the center of the planet for the "distance". Thus, if a planet is 100 times as massive as Earth, but the radius is 10 times more, the radius (squared) would compensate for the larger mass. Note that such a planet would be much less massive than Earth; at the same density, at 10 times the radius it would be 1000 times more massive. This is more or less the situation with Saturn.

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6y ago

Yes, but to be precise, the surface gravity depends on the mass AND on the diameter. Or alternatively, on the density AND on the diameter.

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6y ago

Yes, the force of gravitational attraction of a planet is directly proportional to the planet's mass.

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12y ago

Mass is a property of a planet.

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Q: What is the relationship between the planet and its mass?
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