![]() That's how you calculate your weight on planets other than Earth.įor example, to calculate how much would weigh on Mars a person weighting 150 lb in Earth, multiply this weight by the surface gravity of Mars (0.38 g):įor calculating the weight on Jupiter of that person, the process is the same, but using the gravity of that planet (2. Multiply your weight on Earth by the planet's surface gravity.If the gravity of the planet is half the Earth's gravity, we say the planet's gravity equals 0.5 g or.If the gravity acceleration of the planet is twice the Earth's gravity, we say the planet's gravity equals 2 g or.Determine the surface gravity of the planet in question, in units of "g" or Earth gravity.Even so, if you're interested in how much you would weigh on Mars or any other planet manually, follow the following steps: Not only is the star very massive to start with (about the same as the Sun), but it is also incredibly small (about the size of San Francisco), so you are very close to the center and r is a very small number.This calculator can determine your weight on different planets instantly. Standing on a neutron star makes you unimaginably weighty. This reduces the pull by a factor of 11 2 resulting in about 2.53 times the pull of Earth on you. But, Jupiter is 11 times the radius of the Earth, so you are 11 times further from the center. ![]() This would be true if Jupiter was the same size as the Earth. For instance, you may suspect that because Jupiter is 318 times as massive as the Earth, you should weigh 318 times what you weigh at home. ![]() This equation, first derived by Sir Isaac Newton, tells us a lot. If we put this into an equation it would look like this: See the pattern? The force drops off with the square of the distance. If you are in a spaceship far between the stars and you put a scale underneath you, the scale would read zero. This force of attraction between you and the Earth (or any other planet) is called your weight. Ten times the distance, one-hundredth the force. Scales measure the force of attraction between you and the Earth. If you triple your separation, the force drops to one-ninth. If you double your distance from the planet, the force is one-fourth. On the other hand, the farther you are from the center of the planet, the weaker the pull between the planet and your body. If the planet you are standing on is twice as massive, gravity also pulls on you twice as hard. If you double your mass, gravity pulls on you twice as hard. First, it depends on your mass and the mass of the planet you are standing on. This force of gravity depends on a few things. The Relationship Between Gravity and Mass and DistanceĪs stated above, your weight is a measure of the pull of gravity between you and the body you are standing on. ![]() It still has inertia, and hence mass, yet it has no weight. If you grabbed the anvil and tried to shake it, you would have to push it to get it going and pull it to get it to stop. Are you or the anvil mass-less? Absolutely not. How? All you have to do is stand on a scale! Scales measure the force of attraction between you and the Earth. For everyday-sized objects, this gravitational pull is vanishingly small, but the pull between a very large object, like the Earth, and another object, like you, can be easily measured. The amount of attraction depends on the size of the masses and how far apart they are. Every object in the universe with mass attracts every other object with mass. Mass is a measure of how much inertia an object displays. This quality or "sluggishness" of matter is its inertia. Once you've got it moving, it wants to stay moving. If the stone is at rest, it wants to remain at rest. If you shake an object like a stone in your hand, you would notice that it takes a push to get it moving, and another push to stop it again. An object with mass has a quality called inertia. The mass of a body is a measure of how much matter it contains. We often use the terms "mass" and "weight" interchangeably in our daily speech, but to an astronomer or a physicist they are completely different things. Before we get into the subject of gravity and how it acts, it's important to understand the difference between weight and mass.
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