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Gravitation

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Newton’s Law of Gravitation

  • Statement, Explanation, Vector Form
  • Characteristics of Gravitational Force
  • Universality of the Law of Gravitation
  • Evidences Supporting the Law of Gravitation
  • Definitin, Units and Dimensions of G
  • Principle of Superposition of Forces
  • Problems Based on the law of Gravitation

Gravitational Field Intensity and Gravitational Potential

Acceleration Due to Gravity

  • Weight of Body
  • Force of Gravitation
  • Expression for Acceleration Due to Gravity on the Surface of the Earth
  • Expression for Acceleration Due to Gravity at Height ‘h’ from the Surface of the Earth
  • Characteristics of Acceleration Due to Gravity
  • Relation Between g and gh
  • Problems Based on Acceleration Due to Gravity

Variation in Acceleration Due to Gravity

  • Variation in Acceleration Due to Gravity Due to Shape of the Earth
  • Variation in Acceleration Due to Gravity Due to Latitude
  • Variation in Acceleration Due to Gravity Due to Altitude
  • Variation in Acceleration Due to Gravity Due to Depth
  • Problems Based on Variation in Acceleration Due to Gravity

Keppler’s laws of Orbits of Planets

  • Keppler’s Law of Elliptical Orbits
  • Keppler’s Law of Equal Areas
  • Keppler’s Law of Period
  • Proof of Keppler’s Law of Equal Areas
  • Proof of Newton’s Law of Gravitation Using Keppler’s Law:
  • Problems Based on Keppler’s Law

Artificial Satellites

  • Concept of Satellites
  • Types of Satellites
  • Projection of Satellite
  • Requirement of Multistage Rocket
  • Geostationary Satellites
  • Uses of satellites
  • Polar Satellite and its Advantages
  • Uses of Polar satellites

Binding Energy of Satellite

  • Binding Energy of Satellite Orbiting Around the Earth
  • Binding Energy of Satellite on the Surface Of the Earth
  • Problems Based on Binding Energy

Escape Velocity

  • Concept of Escape Velocity
  • Expression for Escape Velocity
  • Expression of Escape Velocity in Terms of Acceleration Due to Gravity
  • Expression of Escape Velocity in Terms of Density of Material of Earth
  • Relation Between Escape Velocity and Critical Velocity Orbiting Very Close to Earth’s Surface
  • Problems Based on Escape Velocity
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