Because Mercury has a gravitational force of 8.87m/s2, we multiply the object's mass by this value to get the weight of an object on Mercury. As a result, an object or person on Mercury would weigh 37.72 percent of what it would weigh on Earth.
The average person weighs about 130 pounds (59 kg), so an average person would weigh about 860 grams (0.95 oz) on Mercury. This is less than 1% of their weight on Earth; therefore, they would be underweight.
People who are overweight or obese tend to be more toward the high end of the weight range on another planet, so it's likely that those people could weigh as much as 2% of their weight on Earth. For example, a person who weighs 300 pounds (136 kg) would weigh about 1020 grams (1.2 oz) on Mercury.
The effect of gravity is also known as "mass times speed of light squared," or m s-2. So the answer can be rewritten as: 8.87 x (0.95 oz) x (3.28 x 10^8 m/s)2 = 3.49 x 10^23 joules. This works out to about 3.5 million trillion watts - almost half the total power generated by all the solar panels in the world.
Because Mercury has less mass than Earth, its surface gravity is lower than Earth's. Mercury's surface gravity is only roughly 38% that of Earth's, therefore if you weigh 100 pounds on Earth, you would only weigh 38 pounds on Mercury. A person's weight on Mercury would be measured in kilograms (kg).
The weight of a person on Mercury is slightly less than the weight of a person on Earth, due to Mercury's orbit around the Sun being at a relative distance of 47 million km compared with 42 million km for Earth. On average, over a course of 1 year, the amount of weight lost by an individual on Mercury is about 2.5 kg. However, since Mercury has no significant land masses to hold onto, any water lost through this process will be lost forever.
Mercury's low gravity causes all objects to move at a fast rate. If something were to fall on Mercury, it would be crushed into dust. The pressure from the weight of everything above you is enough to crush stones into powder under your feet.
The best way to understand how heavy you are on another planet would be to compare yourself to a meter stick. If you were to stand on one end of it and lift your leg up so your foot was hanging down, you would feel nothing special.
What is the weight, in newtons, of an object with a mass of 90 kilograms on Mercury? The gravitational acceleration on Mercury is 3.6 m/sec2. W = 90 (3.6) = 324 newtons are obtained by substituting 3.6 for g and 90 for m in the formula W = mg. The result is that w is 0.0324 x 10-4 kgm-1sec-2.
Mercury has a mean radius of 740 miles. So the surface area of Mercury is about 44 million square miles. The total volume of Mercury is estimated to be between 3 and 4 billion cubic miles, so the average density is approximately 1150 kg per cubic meter.
The mass of the planet can be calculated from its diameter and gravity using this equation: Mass = r2 * π * G where r is the radius of Mercury and G is the gravitational constant (which has a value of 1.327 * 10-11 m3kg-1sec-2).
So the weight of the object on Mercury is 324 Newtons, or 0.0324 kg mm-2sec-2.
Mercury's gravity is 38% that of Earth. You increase your weight on Earth by 0.38 to get your weight on Mercury. Weight on Mercury is also increased by 0.38 times the distance from Earth to Mercury.
This means that if you weigh 100 pounds on Earth, you would weigh 138.75 pounds on Mercury.
The surface area of Mercury is very small so its mass can be calculated using this formula: Mass = Volume x Density. The density of Mercury is 3.5 grams per cubic centimeter which is similar to iron. That makes its mass equal to 11.3 million tons, or about one-seventh the mass of Earth's moon.
The average distance between the Sun and Mercury is 149.6 million miles. This means that for every hour that sunlight touches the surface of Mercury, only 1/149.6 of 1% of that time is visible from Earth because it's behind the Sun.
However, since Mercury has no atmosphere to speak of, all of its landmasses are exposed to the sunlit side of the planet forever. No part of Mercury is permanently covered by ice or water.