Calculate the Focus of Gravity Between a Newboy Baby( Mass= 4 Kg) and the Planet Mass
YOUR WEIGHT ON OTHER WORLDS
Ever wonder what you lot might counterbalance on Mars or The Moon? Hither'southward your chance to detect out.
TO DO & Detect:
- Fill up in your weight below in the space indicated. You can enter your weight in whatever unit you wish.
- Click on the "Summate" button.
- Notice that the weights on other worlds will automatically fill in. Notice that your weight is dissimilar on the dissimilar worlds.
- You can click on the images of the planets to get more information near them from Neb Arnett's incredible Nine Planets web site.
WHAT'Southward GOING ON?
Mass and Weight
Before we get into the subject of gravity and how information technology acts, it'south important to sympathize the difference between weight and mass.
We often utilize the terms "mass" and "weight" interchangeably in our daily speech, only to an astronomer or a physicist they are completely dissimilar things. The mass of a body is a measure out of how much thing it contains. An object with mass has a quality called inertia. If you shake an object similar a stone in your mitt, you would find that it takes a push to go it moving, and some other button to stop information technology again. If the rock is at residuum, it wants to remain at rest. Once you've got it moving, it wants to stay moving. This quality or "languor" of matter is its inertia. Mass is a mensurate of how much inertia an object displays.
Weight is an entirely different thing. Every object in the universe with mass attracts every other object with mass. The amount of attraction depends on the size of the masses and how far apart they are. For everyday-sized objects, this gravitational pull is vanishingly pocket-sized, only the pull between a very large object, like the Earth, and another object, similar you lot, can be easily measured. How? All you have to do is stand on a scale! Scales measure out the strength of attraction between you and the World. This forcefulness of attraction betwixt you and the Earth (or any other planet) is called your weight.
If you are in a spaceship far betwixt the stars and you put a calibration underneath you, the scale would read nil. Your weight is nothing. Yous are weightless. At that place is an anvil floating next to you. It's likewise weightless. Are you or the anvil mass-less? Absolutely not. If you grabbed the anvil and tried to shake it, y'all would have to push it to become information technology going and pull information technology to get it to terminate. It even so has inertia, and hence mass, nevertheless information technology has no weight. Run across the difference?
The Relationship Betwixt Gravity and Mass and Altitude
Equally stated above, your weight is a mensurate of the pull of gravity between you and the trunk you are continuing on. This force of gravity depends on a few things. First, it depends on your mass and the mass of the planet you are standing on. If yous double your mass, gravity pulls on you twice as difficult. If the planet you are continuing on is twice as massive, gravity likewise pulls on y'all twice as hard. On the other hand, the farther you are from the centre of the planet, the weaker the pull between the planet and your torso. The force gets weaker quite rapidly. If you double your altitude from the planet, the force is one-quaternary. If you lot triple your separation, the force drops to 1-9th. Ten times the distance, one-hundredth the force. See the blueprint? The force drops off with the square of the distance. If nosotros put this into an equation it would look similar this:
The two "1000'due south" on top are your mass and the planet'southward mass. The "r" below is the distance from the centre of the planet. The masses are in the numerator because the forcefulness gets bigger if they get bigger. The distance is in the denominator because the force gets smaller when the distance gets bigger. Note that the strength never becomes nothing no matter how far you travel. Perhaps this was the inspiration for the poem by Francis Thompson:
All things
by immortal power
near or far
to each other
hiddenly linked are.
That chiliad cans't not stir a flower
without troubling a star.
Isaac Newton
This equation, first derived by Sir Isaac Newton, tells us a lot. For case, you may doubtable that because Jupiter is 318 times every bit massive equally the Earth, yous should counterbalance 318 times what you counterbalance at home. This would be true if Jupiter was the aforementioned size equally the Earth. But, Jupiter is 11 times the radius of the Earth, so you are 11 times further from the center. This reduces the pull by a factor of eleven2 resulting in about 2.53 times the pull of Earth on you. Continuing on a neutron star makes yous unimaginably weighty. Not only is the star very massive to commencement with (about the aforementioned as the Sun), simply it is as well incredibly small (about the size of San Francisco), so yous are very shut to the heart and r is a very small number. Small numbers in the denominator of a fraction lead to very large results!
LINKS
- Your Age On Other Worlds
- Build A Solar System
- The Exploratorium's "Observatory"
- The Nine Planets
- Views of the Solar Arrangement
- NSSDC Solar System folio
- NASA Jet Propulsion Laboratory, Pasadena, California
- Astronomy Picture of the Day
Source: https://www.exploratorium.edu/ronh/weight/
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