Categories
Physics

Satellites

Science > Physics > Gravitation > Satellites In this article, we shall study about satellites, their types and uses of artificial satellites Satellites: Any object that revolves around a given planet in circular orbit under the influence of planet’s gravitational force is called as a satellite. Types of Satellites: Satellites are of two types. viz […]

Categories
Physics

Numerical Problems on Keppler’s Laws

Science > Physics > Gravitation > Numerical Problems on Keppler’s Laws In this article we shall study numerical problems on Keppler’s third law of orbital motion, to calculate period of revolution of a planet around the sun. Example – 01: What would be the length of the year if the earth were at half its […]

Categories
Physics

Keppler’s Laws of Orbital Motion

Science > Physics > Gravitation > Keppler’s Laws of Orbital Motion In this article, we shall study Keppler’s laws of orbital motion and their use to derive Newton’s law of gravitation. In the second century A.D., Ptolemy proposed a geocentric theory of the universe. According to this theory, the Earth is the centre of the universe and […]