The launching of satellites
Satellites are considered one of the most
modern technologies that help in all sort of things: communication,
geolocations, space observation... And you've certainly heard about them
orbiting the planet, but something odd is going around! basing on the escape
velocity construct, if we throw something not hard enough it will fall, give it
excessive velocity it will no longer be affected by earth's gravity, therefore
it will fly to space. So how can we conserve the rotational motion of
satellites? Certainly, they're not equipped with engines or that sort of
things.
Remember my story about the pigeon? In a
parallel universe, I decided to use a
stone instead of a rifle because that seems more reasonable, so obviously, I am
going to throw the stone horizontally not vertically and while throwing it I
noticed something, the more powerful I throw the rock the more distance it
travels. This is translated by the displacement curve equation: x = x0 +
v0.t + 0.5 a.t² (x:new position, x0: initial position, v0: initial
velocity, a: acceleration). So logically, if we increase the initial speed, the
distance will augment as well so the stone flies further but falls after all.
But what happens If I throw it very hard horizontally?
In a thorough manner, the stone will fall
away in the exact way the earth will curve underneath it, it's literally
falling but every time it misses the ground !!
To conclude, if we want to launch a
satellite, we must, first of all, calculate the initial velocity that it has to
be launched with depending on the mathematical equation √(G*M/R) (G:
gravitational constant, M: mass of the satellite, R, distance between the
center of earth and the satellite).
The second step is raising the
satellite to the desired altitude, then we give it the motor initial velocity
and let the gravity do the rest.
same things for long-range missiles, but
instead of giving them enough energy to complete a full orbit, we just make
sure that they fall in advance. This kind of rockets is capable of
traveling across continents and seas. With the exact accurate
calculations, you can make them do a whole lap around the earth before falling
on you, why not? A creative way to suicide.
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