TO execute & NOTICE:Fill in her weight listed below in the an are indicated. Girlfriend can go into your weight in any kind of unit friend wish.Click on the \"Calculate\" button.Notice the the weights top top other civilizations will immediately fill in. Notice that your weight is different on the various worlds.
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WHAT\"S walk ON?
Mass and also Weight
Before we acquire into the subject of gravity and how that acts, it\"s necessary to know the difference between weight and also mass.
We frequently use the terms \"mass\" and also \"weight\" interchangeably in our day-to-day speech, however to an astronomer or a physicist lock are completely different things. The mass of a human body is a measure of exactly how much issue it contains. An object with mass has a quality referred to as inertia. If you shake an object like a stone in your hand, girlfriend would notification that that takes a press to obtain it moving, and another press to avoid it again. If the rock is in ~ rest, it wants to stay at rest. As soon as you\"ve acquired it moving, it wants to stay moving. This top quality or \"sluggishness\" of matter is the inertia. Fixed is a measure of how much inertia an item displays.
Weight is an entirely different thing. Every object in the universe v mass attracts every various other object v mass. The lot of attraction counts on the dimension of the masses and how far apart they are. Because that everyday-sized objects, this gravitational traction is vanishingly small, however the pull between a very large object, prefer the Earth, and also another object, choose you, have the right to be easily measured. How? every you have to do is was standing on a scale! Scales measure the pressure of attraction in between you and also the Earth. This force of attraction between you and the earth (or any other planet) is referred to as your weight.
If you are in a spaceship far in between the stars and you placed a scale underneath you, the scale would review zero. Your weight is zero. You space weightless. Over there is an anvil floating next to you. It\"s likewise weightless. Space you or the anvil mass-less? absolutely not. If you ordered the anvil and also tried come shake it, friend would need to push it to get it going and also pull it to get it to stop. The still has actually inertia, and also hence mass, yet it has no weight. Check out the difference?
The Relationship between Gravity and Mass and Distance
As proclaimed above, her weight is a measure up of the pull of gravity between you and also the body you room standing on. This force of gravity depends on a couple of things. First, it relies on her mass and the massive of the planet you space standing on. If you twin your mass, gravity pulls top top you double as hard. If the earth you are standing top top is twice as massive, gravity likewise pulls ~ above you twice as hard. On the other hand, the aside from that you are from the facility of the planet, the weaker the pull in between the planet and your body. The force gets weaker fairly rapidly. If you double your distance from the planet, the pressure is one-fourth. If girlfriend triple your separation, the force drops to one-ninth. Ten times the distance, one-hundredth the force. View the pattern? The pressure drops off v the square that the distance. If we placed this into an equation it would look choose this:
This equation, first derived by sir Isaac Newton, tells united state a lot. For instance, you may suspect that since Jupiter is 318 time as huge as the Earth, you need to weigh 318 time what you sweet at home. This would certainly be true if Jupiter to be the same size as the Earth. But, Jupiter is 11 times the radius that the Earth, for this reason you are 11 times additional from the center. This to reduce the traction by a factor of 112 resulting in about 2.53 time the traction of earth on you. Stand on a spirit star renders you unimaginably weighty. Not only is the star really massive to start with (about the same as the Sun), however it is also incredibly small (about the dimension of san Francisco), so you are very close come the center and r is a very small number. Small numbers in the denominator that a portion lead to very big results!
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