We know, escape velocity of the earth is 11.2 kms-1. That means, in order to escape from the earth or in order to escape the force of gravitational attraction, a body is to start with…

Satellite revolving very near to the earth’s surface: If a satellite remains very near to the earth’s surface, i.e., if h is very small compared to R, i.e., those satellites that revolve round the earth…

Summary of Galileo’s Laws and Keplers’ Laws Galileo’s laws: First law: In vacuum all the freely falling bodies starting from rest traverse equal distance at equal interval of time. Second law: Starting from rest, the…

Geo-stationary satellite: If an artificial satellite is placed in an orbit of the equatorial plane in such a way, that it is concentric and coplanar with the equatorial plane of the earth and the time…

Velocity of the artificial satellite Suppose the height of a satellite is h from the surface of the earth and if R is the radius of the earth, then the radius of the orbit of…

Launching of an artificial satellite in the space: In order to place an artificial satellite in the orbit, necessary very high velocity is provided by multi-stage rocket. The satellite is placed at the nose of…

Natural satellite: The materials or stars which revolve round a planet are called satellites. The satellites which are created naturally are called natural satellites. For example the moon has been created for the natural cause.…

Orbital velocity Objects that travel in uniform circular motion around the Earth are said to be “in orbit”. The velocity of this orbit depends on the distance from the object to the centre of the…