If you are referring to mass, then the percentage would be:
Mercury = 0.330x1024kg Earth = 5.97 x1024kg
Percentage = mercury/earth = 0.330x1024kg/5.97 x1024kg *100 = 5.5%
If you are referring to diameter, the percentage would be:
Mercury = 4879km
Earth = 12,756km
Percentage = mercury/earth = 4879km/12,756km *100 = 38.2%
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Mercury's gravity is about 38% of Earth's gravity. This means that if you weigh 100 pounds on Earth, you would weigh about 38 pounds on Mercury.
The surface gravity of Mercury is about 38 percent of the surfacegravity on Earth.
You probably mean "compared with Earth".
Mercury's surface gravity is about 38% of the Earth's.
Mercury's gravity is approx 40% of Earth's.
90 percent of Earth's gravity would be equal to 9 m/s². This means that an object on Earth would experience a gravity force that is 90 percent of the normal force due to Earth's gravity.
Eris has a gravity that is about 0.082 times that of Earth, meaning it is much weaker.
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On the surface of Venus, the acceleration of gravity, and therefore the weight of any object, is 90.3 percent of what it is on the surface of Earth.