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9 What is the orbital velocity of an Earth satellite 42250 km from Earth?
Wiki User
∙ 15y ago
We know that the centripetal force on an object is mv^2/r where m is the mass of the satellite, v is the tangential velocity, and r is the distance from the center. We also know the centripetal force is the force of gravity, which is GMm/(r^2), so we have v = Sqrt(GM/r) where G is the gravitational constant and M is the mass of the Earth. The distance from the satellite to the center of the circle is 42.25*10^6 + 6.4*10^6 = 48.65*10^6 m. We then get v = Sqrt(6.67*10^(-11)*5.97*10^24*10^(-6)/4.87) = Sqrt(8.2)*10^4 m/s = Sqrt(8.2)*10 km/s
Wiki User
∙ 15y ago
Wiki User
∙ 11y agoIt depends on the satellite and it's distance from the earth.
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Why There is no work done when satellite rotate around earth?
With satellites, the object is not to escape Earth's gravity, but to balance it. Orbital velocity is the velocity needed to achieve balance between gravity's pull on the satellite and the inertia of the satellite's motion -- the satellite's tendency to keep going.This is approximately 17,000 mph (27,359 kph) at an altitude of 150 miles (242 km). Without gravity, the satellite's inertia would carry it off into space. Even with gravity, if the intended satellite goes too fast, it will eventually fly away. On the other hand, if the satellite goes too slowly, gravity will pull it back to Earth.At the correct orbital velocity, gravity exactly balances the satellite's inertia, pulling down toward Earth's center just enough to keep the path of the satellite curving like Earth's curved surface, rather than flying off in a straight line.
Why must a horizontally moving projectile have a large speed to become an earth's satellite?
At lower speed, the object will fall back on the ground. Since, earth is curved, if the object has enought speed, the object can try to fall beyond the curvature of the earth. Thus, it will not hit ground at all. The speed to achieve it is around 8 km/s. If the object is faster than 11.4 km/s then the object will never return. It is called escape velocity.
What will be the velocity of a satellite which is revolving around the earth in a circular orbit the radius R if the radius is increased from R to RR what will be the velocity?
the velocity will be velocity divided by square root of 2
What is geosatelite?
A geostationary satellite is an earth-orbiting satellite, placed at an altitude of approximately 35,800 kilometers (22,300 miles) directly over the equator, that revolves in the same direction the earth rotates (west to east). A geosynchronous satellite is a satellite whose orbital track on the Earth repeats regularly over points on the Earth over time.
How do satellites move in orbit?
Satellite orbit the Earth at different altitudes. A good overview of Low Earth Orbit, Medium Earth Orbit and Geostationary Orbit can be found here: http://www.idirect.net/Company/Satellite-Basics/How-Satellite-Works.aspx
The velocity a rocket must reach to establish an orbit around earth is called?
Orbital velocity, or Close orbital velocity.
Which planet has the lowest orbital velocity?
Pluto is the planet that has the lowest orbital velocity relative to that of the earth. The orbital velocity of Pluto is 0.159.
The tangential velocity of an Earth satellite is its velocity?
parallel to the surface of the Earth
When is earth's orbital velocity the fastest?
perihelion
When is the earth orbital velocity the fastest?
perihelion
Do mercury and earth travel at the same speed?
Nope. Mercury has an orbital velocity of 47.9km/s, whereas Earth has an orbital velocity of 29.8km/s.
Launching rocket at orbital velocity from earth makes the satellite balanced. but how it is keep on revolving the earth even vacuum also have resistance why it does not stop the rotation?
it never stop rotating cus of the earth's gravity. it just the same as moon rotating around the earth. Another Answer: Orbital velocity is just that (among others). The amount of force needed to to achieve a "Free Fall" state. The satellite is actually falling back to Earth in this state and would crash back into it except for one thing. For every foot the satellite falls toward the Earth, the Earth moves a foot out of the way.
Why There is no work done when satellite rotate around earth?
With satellites, the object is not to escape Earth's gravity, but to balance it. Orbital velocity is the velocity needed to achieve balance between gravity's pull on the satellite and the inertia of the satellite's motion -- the satellite's tendency to keep going.This is approximately 17,000 mph (27,359 kph) at an altitude of 150 miles (242 km). Without gravity, the satellite's inertia would carry it off into space. Even with gravity, if the intended satellite goes too fast, it will eventually fly away. On the other hand, if the satellite goes too slowly, gravity will pull it back to Earth.At the correct orbital velocity, gravity exactly balances the satellite's inertia, pulling down toward Earth's center just enough to keep the path of the satellite curving like Earth's curved surface, rather than flying off in a straight line.
What is a geo synchronus satellite?
A geosynchronous satellite is a satellite in geosynchronous orbit, with an orbital period the same as the Earth's rotation period.
The velocity required to keed a satellite in orbit around the Earth is called?
circular velocity
What is special about a geosynchronous satellite?
Its stable orbit and velocity is exactly enough to keep up with Earth's rotation. From Earth's surface, looking up, a geosynchronous satellite would appear not to move; essentially keeping it overhead, and making it permanaently available to bounce communication / TV signals off.Related Information:Moving from the earth outwards, only one orbital velocity will sustain stable orbit, at one particular radius.
As the distance of a satellite from Earth's surface increases the time the satellite takes to make one revolution around Earth?
This is true if the angular velocity is not a variable. That being said this is the reason why the outer planets such as Saturn and Jupiter have such long Solar orbits as opposed to Earth,
