What causes differences in gravity on different planets?

Answer 1

Firstly, gravity is a force.

The strongest gravital effect would be right at the centre of the earth - the centre of its mass.

The greater one's altitude, therefore, the lesser the effect and pull of gravity - being further from the earth's centre.

Answer 2

The equation for acceleration due to gravity is:

a = Gm/r^2

so technically as you get closer to the center of Earth (lower elevation/below sea level), the acceleration due to gravity increases but for all practical puposes, usually that distance is neglegible as you can really still count on the average 9.81 m/s^2 value on Earth's surface.

Answer 3

-- The force of gravity between any two objects depends on the product (multiplied)

of their masses and the distance between their centers.

-- So your weight (the force of gravity between you and the planet) depends on your

mass, the planet's mass, and the distance between your center and the planet's center.

-- If you take your mass to a planet with a different mass, and a surface that's a

different distance from its center, then the gravitational force between you and it

is bound to be different from what the force was on some other planet.

Answer 4

The force of gravitation between two objects is determined by

-- the product of their masses, and

-- the distance between their centers.

On two planets of the same size, the distance from the planets' centers would

be the same in both cases, but if the planets had different masses, then the

gravitational forces between each planet and an object on its surface would be

different.

Answer 5

Look at the formula for gravitational attraction. Gravitational force may vary depending on the masses involved, and on the distance.

Answer 6

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