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Satelites and Orbitals
Introduction
Satellites remain in orbit because the gravitational force acting on them provides the centripetal force required for circular motion. In this topic, students learn how orbital speed, orbital period and orbital radius are related, and explore the differences between low Earth orbit and geostationary satellites. These ideas have important applications in communications, navigation, weather forecasting and space exploration.
AQA A Level Physics Specification: 3.7.1.4 Satellites and Orbits
What You Need to Know
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Explain why gravity provides the centripetal force for satellites in orbit.
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Distinguish between low Earth orbit and geostationary orbit.
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Describe the characteristics of a geostationary satellite.
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Calculate the orbital speed of satellites.
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Calculate the orbital period of satellites.
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Explain how orbital speed and period vary with orbital radius.
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Analyse the advantages and disadvantages of different satellite orbits.
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Solve quantitative problems involving orbital motion and satellites.
Downloadable Topic Pack
Satellites and Orbits Topic PackExam Questions and Answers
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