Being that Mercury has a gravitational force of 8.87m/s2, we multiply the object's mass by this quantity to calculate an object's weight on Mercury. So an object or person on Mercury would weigh 37.72% of its weight on Earth. Therefore, a person would be lighter on Mercury than on Earth. But he or she would still weigh more than a comparable size person.
The human body contains approximately 60-65% water by weight. The rest is made up of other substances including: protein (5-10%), fat (25-30%), minerals (less than 1%). On Mercury, where there is no gravity, a person would float unless they were holding on to something. Because muscle and bone cells are heavy per unit volume, people would get heavier as they got older on Mercury.
It is estimated that on average, humans lose 5-10% of their weight over time due to age and death. This means that on Mercury, people would slowly get heavier over time.
The average adult male on Earth weighs about 80 kilograms (180 pounds). A female averages 60 kilograms (130 pounds). On Mercury, these numbers increase to 95 and 115 kilograms (210 and 250 pounds) respectively. That's more than 30 percent heavier than on Earth!
Mercury has no appreciable magnetic field, so objects on this planet would be susceptible to meteoroids and cosmic rays.
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. However, since the average weight of humans is around 150 pounds, this means that people on Mercury weigh about 6 pounds more than they do on Earth.
This may seem like a lot, but since Mercury has less mass than Earth, this amount goes up as high as 22 pounds for some people! The more mass you have, the harder it is to move objects with your mind. Thus, the people who can pull off moving objects with their minds are heavy people.
However, the lighter you are, the easier it is to move objects with your mind. Thus, the people who can move objects with their minds are light-weight people. This is why obese people cannot usually move objects with their minds. They are too heavy!
Now, since the average weight of humans is around 150 pounds, this means that people on Mercury weigh about 6 pounds more than they do on Earth. In other words, they weigh about 150 pounds each.
This means that if you weigh 150 pounds on Earth, you will also weigh 150 pounds on Mercury.
This determines the object's mass. Once we know the mass of an item, we can calculate its weight by multiplying it by the gravitational force to which it is subject. 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.
The standard unit for mass is the kilogram (kg). One kilo is equal to 1,000 grams. On Earth, one ounce is 28.35 grams and a pound is 0.454 kilo. But on other planets where there is no standard unit for mass, it may be difficult to work out how much something weighs without doing some more calculation. For example, on Mars the average rock density is 3,500 kg per cubic meter which means that a ton of rocks weighs about 3 million kg.
On Mercury, all objects with a mass greater than 2.72 x 10-4 kg will collapse under their own weight. All objects with a mass less than 7.40 x 10-9 kg will be crushed under the pressure of matter rushing in from outside their boundary layer.
The reason that objects lose mass as they travel through space is called "gravitational loss". This happens because particles are constantly coming into existence due to quantum effects and these particles have no memory of their previous existence and so cannot carry any energy or momentum with them.
If you weigh 100 pounds on Earth, you would only weigh 38 pounds on Mercury. Because Mercury weighs less than Earth, its gravity would exert less force on your body. If you were on Jupiter, though, you would weigh a massive 253 pounds! That's more than twice as much as the average weight of the people on Earth!
The scale below shows you how much each planet weighs. The weight of each planet is in parentheses next to its name. Earth is not very big or very heavy, but it can still be considered lightweight because everything else is so massive.
Mercury is almost all metal with a small amount of rock left over from when it was forming. It takes about 95% of the Earth's mass to contain only 3% of its volume. This means that there is a lot of space inside Earth for her to be this light.
Jupiter is by far the most massive planet in the Solar System and also the most dense. It consists mostly of hydrogen and helium with some rocks and ice buried deep down inside. It has more than 99.9% of the Earth's mass but only 4% of its volume. This means that even though Jupiter is huge, he can still fit inside Earth's orbit.
Saturn is the second-largest planet and also the most distant from the Sun.