Unit-6 : Gravitation
	Kepler's Laws of Planetary Motion
	Derivation of Kepler's Laws
	Newton’s Universal Law of Gravitation
	Acceleration Due to Gravity of the Earth
	Variation of g with Altitude (Height)
	Variation of g with Depth
	Gravitational Potential Energy
	Gravitational Potential
	Escape Velocity
	Orbital Velocity
	Geostationary Satellite
	Problems