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The funniest post is from Omega, with the picture of an elephant)))) I was laughing for a long time.

With what force must it be hurled into orbit?

It is given the necessary acceleration, and no other way, but by the power of Jewish thought.

With what force must he be flung into orbit? .

Cosmic velocities:
first, second, third, critical values of a spacecraft's velocity at the moment it enters orbit (i.e., at the moment the launch vehicle's engines stop operating) in a gravitational field. Each C. v. is calculated according to specific formulas and can be physically interpreted as the minimum initial velocity at which a spacecraft launched from Earth can either become an artificial satellite (first C. v.), leave the sphere of Earth's gravity (second C. v.), or leave the Solar System by overcoming the Sun's attraction (third C. v.). Two variants of mathematical definitions for C. v. are found in literature. In one variant, C. v. can be calculated for any height above the Earth's surface or any distance from the center of the Earth.
The first C. v. υI at a distance r from the center of the Earth is determined by the formula where f is the gravitational constant and M is the mass of the Earth. It is accepted (see Fundamental Astronomical Constants) that fM = 398603 km3/sec2. In celestial mechanics, this velocity is also called circular velocity, because in a two-body problem, the motion of a body with mass m around another body possessing an incomparably larger mass M (where M >> m) in a circle of radius r occurs precisely at such a velocity.
If at the moment of entering orbit the spacecraft has a velocity υ0 = υI perpendicular to the direction of the center of the Earth, then its orbit (in the absence of perturbations) will be circular. If υ0 < υI, the orbit is elliptical, and the point of entry into orbit is located at the apogee. If this point is at an altitude of about 160 km, then immediately after entering orbit, the satellite enters the denser layers of the atmosphere lying below and burns up. Thus, for the specified altitude, the first C. v. is the minimum required for a spacecraft to become a satellite of Earth. At greater altitudes, a spacecraft can become a satellite even with υ0 slightly less than the υI calculated for that altitude. For example, at an altitude of 300 km, it is sufficient for a spacecraft to have a velocity 45 m/sec lower than υI.
The second C. v. υII at a distance r from the center of the Earth is determined by the formula υ0 = υII; a body with mass m in a two-body problem will move relative to a body with mass M (where M >>m) along a parabolic orbit and recede arbitrarily far, becoming free, in a sense, from gravitational effects. Velocities lower than parabolic are called elliptical, and higher ones hyperbolic, because at such initial velocities, motion in a two-body problem with masses m and M (where M >> m) occurs along elliptical or hyperbolic orbits, respectively.
Values of the first and second C. v. for various altitudes h, measured from sea level at the equator (h = r — 6378 km), are given in Table 1.
Table 1. — First (υI) and second (υII) cosmic velocities for different altitudes (h) above sea level

------------------------------------------------------------
| h, km | υI km/sec | υII km/sec |
|----------------------------------------------------------|
| 0 | 7,90 | 11,18 |
|----------------------------------------------------------|
| 100 | 7,84 | 11,09 |
|----------------------------------------------------------|
| 200 | 7,78 | 11,01 |
|----------------------------------------------------------|
| 300 | 7,73 | 10,93 |
|----------------------------------------------------------|
| 500 | 7,62 | 10,77 |
|----------------------------------------------------------|
| 1000 | 7,35 | 10,40 |
|----------------------------------------------------------|
| 5000 | 5,92 | 8,37 |
|----------------------------------------------------------|
| 10000 | 4,94 | 9,98 |
------------------------------------------------------------

The concepts of C. v. are also applied when analyzing the motion of spacecraft in the gravitational fields of any planets or their natural satellites, as well as the Sun. In this way, C. v. can be determined for Venus, the Moon, the Sun, etc. These velocities are calculated using the formulas provided above, where M is taken as the mass of the corresponding celestial body. Values of fM for some celestial bodies are given in Table 2.
Table 2. — Values of the gravitational constant for the Moon, Sun and planets

----------------------------------------------------------
| Celestial body | fM, km3/sec2 |
|---------------------------------------------------------|
| Moon | 4,903․103 |
|---------------------------------------------------------|
| Sun | 1,327․1011 |
|---------------------------------------------------------|
| Mercury | 2,169․104 |
|---------------------------------------------------------|
| Venus | 3,249․105 |
|---------------------------------------------------------|
| Earth | 3,986․105 |
|---------------------------------------------------------|
| Mars | 4,298․104 |
|---------------------------------------------------------|
| Jupiter | 1,267․108 |
|---------------------------------------------------------|
| Saturn | 3,792․107 |
|---------------------------------------------------------|
| Uranus | 5,803․106 |
|---------------------------------------------------------|
| Neptune | 7,026․106 |
|---------------------------------------------------------|
| Pluto | 3,318․105 |
----------------------------------------------------------

The third C. v. υIII is determined by the condition that a spacecraft, having reached the boundary of Earth's sphere of gravitational influence (See Sphere of Gravitational Influence) (i.e., a distance of about 930000 km from Earth), has a parabolic velocity relative to the Sun (near Earth's orbit this velocity is 42,10 km/sec). Relative to Earth at this moment, the spacecraft's velocity cannot be less than 12,33 km/sec; for this, according to formulas of celestial mechanics, when launched near the surface of the Earth (at an altitude of 200 km), the spacecraft's velocity must be about 16,6 km/sec.
In another variant of mathematical definition, the first, second and third C. v. are calculated by the same formulas, but only for the surface of a spherical uniform model of Earth (with a radius of 6371 km). In this sense, the first C. v. is circular velocity, and the second C. v. is parabolic velocity, calculated for the surface of the Earth. Under these conditions, C. v. have unique values: the first C. v. equals 7,910 km/sec, the second — 11,186 km/sec, the third — 16,67 km/sec. In a hypothetical launch of a spacecraft from the surface of such an Earth model, assumed to be absolutely smooth and devoid of atmosphere, C. v. exactly correspond to the physical interpretation indicated at the beginning of the article.
Similarly, C. v. can also be calculated for the surfaces of other celestial bodies. For example, for the Moon, the first C. v. is 1,680 km/sec, and the second — 2,375 km/sec. The second C. v. for Venus and Mars equals 10,4 km/sec and 5,0 km/sec, respectively.
Something like that. But with elephants it was probably all simpler; it was enough to choose an elephant with the strongest trunk, perfectly master the hammer throw technique, and most importantly, find a fulcrum.:)

And no one thought about the poor elephants. They can’t fly there alive! Throwing an elephant into Earth’s orbit kills it! Cruel people, they destroyed so many intelligent and useful animals!

Cosmic velocities:
first, second, third,
................
The first cosmic velocity is 7.910 km/s, the second is 11.186 km/s, and the third is 16.67 km/s.

Quite an informative piece of work.
If you could also calculate what the density and thickness of the skin should be at that speed so that the elephant doesn't burn up in the atmosphere (or at least fly into orbit slightly singed), and also what additional fastenings should be on the trunk during the "spinning" of the elephant, it would be a truly comprehensive work!

Stop spamming – learn the basics better.

And no one thought about the poor elephants. They can't fly around alive! Throwing an elephant into Earth's orbit kills it! Cruel people, they destroyed so many intelligent and useful animals!

Drakkosha, look at what your elephant is doing with the lizard on the previous page...

But in general, it's a good thing that Slonysh doesn't read the forum, she would tear us apart for the elephants.

Hey Drakkosha, take a look at what your elephant is doing with the lizard on the previous page...
But it's a good thing that Slonysh doesn't read the forum, otherwise she would tear us apart for talking about elephants.

A smart person doesn't need to read the thread to know what it's about.

A smart person doesn't need to read a topic to know what it's about.

I don't know. On one hand, Slonysh would say, "It's a forum, something about sports, why would a girl read this!". On the other hand, she loves sports so much that she passionately cheers for Lokomotiv at the stadium. She might decide to write a post about Sychev's problems in attack... and stumble upon flying elephants... :smile10:

I assure you, Slonysh knows perfectly well who is writing here and what is happening. When the political thaw ends, all these jokers will be shot.

I assure you, Slonysh knows perfectly well who is writing here and what is happening. When the political thaw ends, all these jokers will be shot.

Ugh, thanks for the warning, I have to meet her in real life - on January 4th, I'll be there with a bouquet of roses, maybe she'll forgive me for the elephants.

Take two, the first one will probably throw it, considering such a transgression.

Take two, the first one will probably throw it, for such a transgression.

2 Zybr. Did you read the topic? It has already been proven that to throw something, you need to grab it and twist it. I don't have a trunk, I have a nose, but you can't grab it with that. )
So, I'm calm, I'll get away with a bouquet and compliments. :smile03:

Cosmic speeds:

I'm not a physicist, but I'll venture to suggest that for an elephant to actually leave the ground (overcome Earth's gravity), its initial speed at the moment of launch must be significantly greater than the first cosmic velocity, because an elephant doesn't have rocket engines to maintain a constant speed during flight. It will very quickly lose its initial acceleration, just like a bullet fired into the sky will slow down to 0 after a few seconds and fly back to Earth (gravity is a force that doesn't want to let anyone go easily). Therefore, we can conclude that the elephant must be given an initial speed that even specially equipped rockets would hardly be able to withstand; that is, the elephant would simply be torn apart, not just its trunk, considering that the acceleration was achieved by spinning it by the trunk (not the best choice). Although, perhaps in the past, elephants were much different than they are now – more resilient and aerodynamic, and the force of gravity, without Zionist interference, was an order of magnitude less. Ariputra should know. :rolleyes:

Ariputra should know. :rolleyes:

?

Russian language - no, haven't heard of it
Physics - no, haven't heard of it
Common sense - ...