Скачать или смотреть Gravitation Lecture 5 | Satellite Motion & Geostationary Orbits | A2 Physics (9702 Syllabus)

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This lecture continues the A2 Physics Gravitation series with a detailed focus on satellite motion and geostationary orbits. It builds on Newton’s Law of Gravitation to explain how satellites remain in stable circular motion, how their velocity and time period are calculated, and why geostationary satellites are so important for communication and weather monitoring.

✨ Topics Covered in this Lecture:
• Derivation of satellite orbital velocity
• Angular velocity and time period of satellites (Kepler’s 3rd Law)
• Kinetic energy and gravitational potential energy in orbits
• Types of satellites: polar orbiting, equatorial, GPS, geostationary
• Detailed study of geostationary orbit (24-hour period, equatorial plane)
• Calculation of geostationary orbital radius (~4.29 × 10⁷ m ≈ 6.6 Earth radii)
• Applications of satellites in communication, navigation, and weather forecasting
• Exam-style problems on orbital mechanics and geostationary satellites

📖 Key Learning Outcomes:
• Apply Newton’s Law of Gravitation to satellite motion
• Calculate orbital velocity, angular velocity, and time period of satellites
• Understand the concept and significance of geostationary satellites
• Differentiate between types of satellite orbits and their applications
• Solve A2 exam questions confidently using derived equations

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