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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 else can I help you with?
Does earth's gravity do any work on satellite revolving around it?
NO. The gravity of Earth, in conjunction with the inertia of the satellite, keeps the satellite revolving around Earth. However, the satellite doesn't get any nearer to the Earth. So, according to the laws of physics, no work is done. (I'm ignoring the fact that satellites sometimes lose height and need to be "boosted" a bit to maintain their orbits. Also, I'm assuming that the satellite's orbit is circular. If the orbit is elliptical the answer is more or less the same, but a bit more complicated.)
How tall is the sputnik satellite?
Sputnik 1 was launched on October 4, 1957. The satellite was 58 cm (about 23 in) in diameter and weighed approximately 83.6 kg (about 183 lb). Each of its elliptical orbits around the Earth took about 96 minutes. Monitoring of the satellite was done by many amateur radio operators
What was The first country to launch an earth satellite or artificial baby moon?
spudnik was the first sattelite lauchned by the ussr but a man hole cover from a nuclear test was the first object launched into space this was done by the usa
Are Google Maps done with a satellite?
Google Maps provides satellite and map views in addition to Street Views. The satellite view of Google Maps uses the same backend satellite imagery database used by Google Earth.The satellite imagery are typically from the GeoEye or DigitalGlobe owned satellites, and some of the imagery are actually aerial photos from aircraft using special high resolution cameras.
What does rotate graphic mean?
"Rotate graphic" typically refers to the action of turning a graphical element or image around a fixed point, often its center, to change its orientation. This can be done in various software applications, such as graphic design programs, where users can adjust the angle of the graphic for better alignment, aesthetics, or to fit specific design requirements. The rotation can be applied in degrees, allowing for precise positioning.
How much work is done on a satellite in a circular orbit about Earth?
The work done on a satellite in a circular orbit around Earth is zero because the gravitational force acting on the satellite is perpendicular to the direction of motion, so no work is done to maintain the orbit.
Is the work is done when satellite orbits around the earth?
No because it stays in orbit and takes pictures of the ever changing earth.
How much work is done on a satelite in circular orbit about earth?
In a circular orbit, a satellite is in free fall and moves with a constant speed, which means that the gravitational force acting on it provides the necessary centripetal force for its circular motion. Since the gravitational force is always perpendicular to the satellite's displacement, the work done on the satellite by gravity is zero. Therefore, no net work is done on a satellite in a stable circular orbit around the Earth.
Does earth's gravity do any work on satellite revolving around it?
NO. The gravity of Earth, in conjunction with the inertia of the satellite, keeps the satellite revolving around Earth. However, the satellite doesn't get any nearer to the Earth. So, according to the laws of physics, no work is done. (I'm ignoring the fact that satellites sometimes lose height and need to be "boosted" a bit to maintain their orbits. Also, I'm assuming that the satellite's orbit is circular. If the orbit is elliptical the answer is more or less the same, but a bit more complicated.)
What is geostationary satellite?
A satellites period, the time it takes it to go around the earth, is determined, in part, by its altitude. The further away it is then the longer it will take. You can calculate an altitude where it will take just one day to make an orbit. If this is done then though the satellite orbits the earth it appears to be stationary above one point of the earth. This orbit must be above, or very near to, the equator. For the earth this altitude is approximately 36,000 km (22,000 miles)
What is the transmission from a satellite to an earth-based station?
The transmission from a satellite to an earth-based station is typically done using radio frequency signals. The satellite sends data to the ground station through a process called downlinking. The ground station receives the signals, processes the data, and distributes it to its intended destination.
What work is done by earth revolving around the sun?
the earth revolves around the sun...that's how we have night and day
What is the work done by torque in rotating an object?
The work done by torque in rotating an object is the amount of energy transferred to the object to make it rotate. Torque is a force that causes an object to rotate around an axis, and the work done by torque is calculated by multiplying the torque applied to the object by the angle through which the object rotates.
What keeps a satellite in orbit around a planet?
It is not gravity because there is no gravity in space, only some on certain planets, deffiantly on earth. It is done by the strength from other planets the sun for instance. Heat waves. Some of the gravity in space does help keep the planets and satellites in orbit.
How do you cominucate to a satellite on mars from earth?
That is done by radio waves. The Earth end of the raio links are maintained by large dish-type radio antennas, of diameter more than 10 metres.
Is work done to keep the earth revolving around the sun?
No.
What is a geostation satellite?
Geostationary satellites orbit high above the surface of the earth at about 35,000km, directly above the equator. The take the same time to complete one orbit as the earths surface as it rotates meaning it is always above the same point on earth. They are used for TV and telephone signals as well as weather imagery, among other things. A satellites period, the time it takes it to go around the earth, is determined, in part, by its altitude. The further away it is then the longer it will take. You can calculate an altitude where it will take just one day to make an orbit. If this is done then though the satellite orbits the earth it appears to be stationary above one point of the earth. This orbit must be above, or very near to, the equator. For the earth this altitude is approximately 36,000 km (22,000 miles)
