Here are the topics covered in this chapter

• 8.1 Introduction
• 8.2 Kepler’s laws
• 8.3 Universal law of gravitation
• 8.4 The gravitational constant
• 8.5 Acceleration due to gravity of the earth
• 8.6 Acceleration due to gravity below and above the surface of the earth
• 8.7 Gravitational potential energy
• 8.8 Escape speed
• 8.9 Earth satellites
• 8.10 Energy of an orbiting satellite
• 8.11 Geostationary and polar satellites
• 8.12 Weightlessness