A planet's size and mass determines its gravitational force it has on objects and people. Five planets are smaller than Earth and only two are larger.
Know MoreTo understand how each planet's gravitational force differs from Earth's, consider Earth as having a pull of 100%. Mercury and Mars are the two smallest planets, and their pull is 38% of Earth's. Uranus comes in third at 80% and Venus is 91%. The planet decorated with rings, Saturn has the closest pull to Earth's at 93%. Things get a bit heavier on Neptune, which has a pull of 20% more than Earth, and the massive planet of Jupiter has an incredible pull of 254%, which would make a person 154% heavier than on Earth.
Learn more about PlanetsWeight is the measure of the gravitational force on an object. Weight is related to mass but is actually a separate property. Weight and mass are often treated as interchangeable because gravity on Earth does not vary much based on location.
Full Answer >As the distance between two objects decreases, the gravitational force between them increases. Conversely, as the distance between them increases, the gravitational force decreases. Gravitational force is inversely proportional to the distance between two objects squared.
Full Answer >The magnitude of the gravitational force acting on an object, F, is proportional to the universal gravitational constant, G, and the product of the two masses involved, m and M. It is inversely proportional to the distance between the objects, r, squared.
Full Answer >The gravity numbers of other planets in the solar system refer to the gravitational force they exert on an object on their surfaces. If the Earth's gravity number is 1, then the planet Mercury has a gravity number of 0.3, Venus has a gravity number of 0.9, Mars has 0.3, Uranus has 0.8, Neptune has 1.1, Saturn has 1 and Jupiter has 2.3.
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