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fluidistic
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Homework Statement
At what height (from the ground of the Earth) must be placed a geostationary satellite?
Hmm... I guess they want me to use [tex]F_c=m_ca_c=m_c\frac{v^2}{r}[/tex]. Also [tex]F_c=\frac{Gm_cM_E}{r^2}[/tex] which led me to conclude that [tex]r=\frac{GM_E}{v^2}[/tex]. But the velocity is unknown so I'm stuck. At last I could calculate it but only in function of the altitude (using the formula [tex]v=\omega r[/tex]) which is precisely what I'm looking for...They mean that the orbital period is 1 day, so that the satellite is always directly over the same place on Earth.
Also, assume a circular orbit. What equations do you know that apply to:
1. gravity
2. circular motion
fluidistic said:Hmm... I guess they want me to use [tex]F_c=m_ca_c=m_c\frac{v^2}{r}[/tex]. Also [tex]F_c=\frac{Gm_cM_E}{r^2}[/tex] which led me to conclude that [tex]r=\frac{GM_E}{v^2}[/tex]. But the velocity is unknown so I'm stuck. At last I could calculate it but only in function of the altitude (using the formula [tex]v=\omega r[/tex]) which is precisely what I'm looking for...
fluidistic said:[tex]r=\frac{GM_E}{v^2}[/tex]. But the velocity is unknown so I'm stuck. At last I could calculate it but only in function
of the altitude (using the formula [itex]v=\omega r[/itex]) which is precisely what I'm looking for...
A geostationary satellite is a type of satellite that orbits the Earth at the same speed and direction as the Earth's rotation, allowing it to appear stationary in the sky from a fixed location on the ground.
The main problem with geostationary satellites is the limited coverage area they can provide. Since they remain fixed in one location in the sky, they can only cover a specific region on the Earth's surface. This can be a disadvantage for global communication and navigation services.
One solution to the limited coverage area of geostationary satellites is to use a network of multiple satellites, known as a constellation, to provide global coverage. Another solution is to use satellites in different types of orbits, such as low Earth orbit or medium Earth orbit, to supplement the coverage of geostationary satellites.
Other issues that can affect geostationary satellites include solar flares, which can disrupt communication signals, and space debris, which can collide with the satellite and cause damage. Additionally, the lifespan of geostationary satellites is limited, typically around 15 years, after which they must be replaced.
Geostationary satellites are used in a variety of scientific research, such as monitoring weather patterns, tracking environmental changes, and studying the Earth's atmosphere. They also play a crucial role in global positioning systems (GPS) and telecommunications, which are essential for many scientific endeavors.