Have you ever wondered how much you weigh on other planets such as Venus and Jupiter?

And do you know why you may weigh the same on both the planet Mercury and Mars, despite their differences in everything?

And do you know what your weight basically means?

And why when you stand on the scale, this number appears to you in particular?

The difference between weight and mass

To know the answer to the above questions, it is important to first understand the difference between weight and mass.

In our daily conversation, we often use the terms mass and weight interchangeably as if they have the same meaning, while an astronomer or a physicist sees them as two completely different things;

The mass of an object is a measure of the amount of matter it contains.

The mass measures, roughly, the inactivity of the body and its resistance to movement or stopping.

Once an object moves, its mass remains constant across the universe, while your weight changes depending on the gravitational forces acting on you, which vary from planet to planet.

Weight is the gravitational force exerted on an object due to its mass.

Every object in the universe has mass, which attracts every other object that has mass.

The amount of gravity depends on the size of the objects and how far apart they are.

For objects of small size, this gravitational force is very small, but the drag between a very large object, such as the Earth, and another object as small as yourself, can be easily measured.

How do?

All you have to do is stand on the scale.

This scale will measure the force of attraction between you and the Earth.

The force of attraction between you and the Earth (or any other planet) is your weight.

When you stand on a scale to measure your weight, it actually measures the gravity between you and the ground and gives you the result in kilograms.

So, if we go from Earth to Mars, our weight will change because Mars' gravity is less than Earth's.

As for our mass, it is the amount of matter that we are made of, and this does not change with the change of the planet we are on.

Your weight varies on other planets due to gravity, but your mass is the same everywhere (NASA)

Between gravity, mass, and distance

If your weight is a measure of the force of gravity between you and the object you are standing on, then the force of gravity here depends on a few things.

First, it depends on your mass and the mass of the planet you are standing on.

If you double your mass, gravity pulls you in with a double force.

And if the planet you are standing on is twice as massive, gravity also pulls you twice as much.

Second, the further away from the center of the planet, the weaker the force of attraction between the planet and your body.

If you double the distance between you and the center of the planet, the gravitational force here will be one-fourth.

And if you multiply the distance 3 times, the force drops to a ninth.

The conclusion is that the force of attraction increases with increasing mass and decreases when the distance increases.

And you might think that since Jupiter is 318 times the mass of Earth, you should weigh 318 times what you weigh on Earth.

This would be true if Jupiter were the same size as Earth.

But Jupiter is 11 times the radius of Earth, so you're 11 times further from the center, and that reduces the pull of gravity by a factor of 112, which results in just 2.53 times the pull of Earth.

Newton's law of universal gravitation states that everything in the universe has mass that attracts everything else that has mass (pixels)

Newton's law of gravitation between objects

Newton's law of universal gravitation states - as a Live Science report indicates - that everything that has mass attracts everything else that has mass, and pulls with a force that is directly proportional to the product of the two bodies' masses, and inversely proportional to the square of the distance between their centers.

In other words, although gravity increases directly with an increase in the mass of objects, it decreases exponentially with an increase in the distance between them (a phenomenon known as the inverse square law).

When calculating the surface gravity of a planet, the distance here refers to the space between you and the planet's center of mass.

This means that a planet's size has a greater relativistic effect - on its gravity and your weight on its surface - than its mass.

This explains why Mercury and Mars have the same relative gravity, even though Mars is almost twice the mass of Mercury;

The large size of Mars means that its diameter is 1.4 times the diameter of Mercury.

Uranus and Venus provide a clearer example of this phenomenon. Although Uranus is about 17.8 times the mass of Venus, its larger diameter is 4.2 times the reason why the surface gravity of the two planets does not differ.

To calculate the ratio between the gravity of the Earth's surface and the gravity of any other celestial body, it must be calculated separately using Newton's law.

(communication Web-sites)

Your weight on other planets

Newton's law of gravitation between objects is written in the following mathematical form:

F = G (m1 X m2/r2), since (F) is the force due to gravity, (G) is the general gravitational constant between masses, (m1) is the mass of the first body, and (m2) is the mass of the second body, and (r) is the distance between the centers of the two bodies.

To calculate the ratio between the gravity of the Earth's surface and the gravity of any other celestial body, it must be calculated separately using Newton's law mentioned earlier.

Here is the gravity of each planet:

Mercury: 0.38

Venus: 0.91

Ground: 1.00

Mars: 0.38

Buyer: 2.53

Saturn: 1.06

Uranus: 0.92

Neptune: 1.19

Pluto: 0.06

Because weight = mass x gravity, multiplying your weight on Earth by the numbers above will give you your weight on the surface of each planet.

If you weighed 68kg on Earth, you would weigh 26kg each on Mercury and Mars, about 60kg each on Venus and Uranus, and 4kg each on the dwarf planet Pluto.

And 117 kg on the buyer.

You can also calculate your weight on any planet or moon of our solar system easily via this website, just enter your weight on Earth and press the "Calculate" button.


Find out your weight on other planets via this link.