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grizzlyjoker
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Why is an sattelite's motion not circular? I mean if there is a force that adjust the orbit every instant shouldn't the orbit be circular?
Uniform circular motion occurs when the centripetal force is always directed perpendicular to the velocity. Objects in space are not always constrained to move perpendicular to the gravity force.grizzlyjoker said:Why is an sattelite's motion not circular? I mean if there is a force that adjust the orbit every instant shouldn't the orbit be circular?
Satellites do not move in perfect circles because their orbits are affected by various factors such as the gravitational pull of other objects in space, atmospheric drag, and the oblateness of the Earth's shape.
The gravitational pull of other objects, such as the Moon and the Sun, can cause a satellite's orbit to become elliptical instead of circular. This is because the strength and direction of the gravitational force changes as the satellite moves around these objects.
Atmospheric drag is the resistance that a satellite experiences as it moves through the Earth's atmosphere. This drag can cause the satellite's orbit to decrease in altitude, making it more elliptical rather than circular.
Yes, the Earth's oblateness, or its slightly flattened shape at the poles, can have a small impact on a satellite's orbit. This is because the Earth's gravitational pull is stronger at the poles compared to the equator, which can cause a slight variation in a satellite's orbit.
Scientists use mathematical models and equations, such as Kepler's laws of planetary motion, to calculate and predict the orbit of a satellite. They also take into account any external forces that may affect the satellite's motion, such as the Earth's gravitational pull and atmospheric drag.