![]() Mass is, how does something react to a specific force? And we already learnedįrom Newton's second law that if you have a givenįorce and you have more mass, you'll accelerate less. More fancy physics, that still will exhibit mass. Other things that aren't what we would traditionallyĪssociate with matter, once we start going into With this definition right here, because there are Is- and this is not a technical definition,īut it will give you a sense of it- is how So mass is literally- there'sĪ couple of ways to view mass. On a regular basis, but are really muddled up If this disappeared (for example, if I was completely made out of water) then the answer would be obvious, even common sense: I would not hold my structure. ![]() The reason my hand does not fall apart is because each of the atoms in my hand are in some sort of bond (covalent or ionic) with each other, increasing greatly the force of electromagnetism between them, which allows each atom to have a fairly functional defined relationship to the rest of the atoms in my hand, thus retaining the structure. But if it did, then how is my hand keeping the structure of my hand? I am thinking it probably takes into consideration a whole bunch of other forces at that level, including the strong force, the weak force, and electromagnetism, which might cancel out gravity. However, I am still puzzled by the second case I gave. If anyone uses this page and is able to do the calculations independently themselves please tell me where I am wrong.Īny problems, suggestions for improvements or comments, please e-mail meĬalculator is copyright (c) 2020 Satellite Signals Ltd.After thinking about it, I realize that the masses of my 2 hands are much smaller than the masses of the earth and myself, so even though they are a lot closer to each other, they are also a lot less massive, whch would explain why my hands don't impose a strong force on each other, even when they are touching. May be in error and should not be used for orbital manoeuvres or the This calculator is only for educational purposes. Phobos is a moon in orbit around Mars: Height 5980 km (Mars radius: 3396.2km. Photo satellite in orbit around Mars Global Surveyor: Height 378 km Rocket launch to an initial low earth orbit: Height 185 km If above 600 km there is so little air drag that they might pollute the sky virtually for ever ! Starlink constellation: Height 540 - 570 km. Moon orbiting the earth: Also somewhat elliptical, at perigee, bottom, 363,104 km at apogee, top. Try thisĪnd the result is a little over 365.25 days. The orbit is slightly elliptical, with height varying from 147.1 million km to 152.1 million km. Here is a NASA fact sheet with details of each planet, its orbital period and its distance fromĮarth orbiting the sun. km 3 s -2 is frequently used in the scientific literature and in spacecraft navigation. May be expressed in units of m 3 s -2 or km 3 s -2. Standard gravitational parameter μ = GM (This is different, according to your choice of the main body) Radius of circular orbit in km (equals half the diameter of the main body plus height) Gravitational Constant G is 6.6743 x 10 -11 m 3 kg -1 s -2 Velocity in metres/sec (or alternatively in ft/sec as shown in output table above). To work out orbit period or time to go around the orbit: Orbit period = 2 * PI * square root of ( (half-diameter ^ 3) / μ ) / 60 minutes Velocity = square root of (Gravitational constant times Mass of main body / radius). The formulas used in the above are as follows: Pluto used to be called a Planet but Pluto's type has recently been reviewed and it wasĭecided to downgrade it to dwarf planet also.Īdded an option (select Main body called "Other"), so you may input your own values for Main body diameter and mass.Īdded a height input in feet to suit low orbits like 60,000 ft above lunar surface. Ceres is one of many objects in the asteroid belt, but because it is particularly large for anĪsteroid, it was decided to call it a dwarf planet in 2006. There is a pull down menu with options for the The calculator uses information about the mass and diameter of the main body at the center of the orbit, typically the Earth. This page is about orbital height, speed and period. Radius of orbit (= height + diameter of main body / 2 ) Standard gravitational parameter for main body μ = GM km 3s -2 km 3s -2 Gravitational constant G 6.6743 x 10 -11 Nm 2s -2
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