JEE-IIT-NCERT Physics & Math

We know that in a solid, each atom or molecule is surrounded by neighbouring atoms or molecules. Th… Read more Elastic Behaviour Of Solids, Stress And Strain

Using Eq.  $V^2=\frac{GM_E}{R_E+h}$ the kinetic energy of the satellite in a circular orbit with sp… Read more Energy Of An Orbiting Satellite

An interesting phenomenon arises if in we arrange the value of ($R_E + h$) such that T in  $T=\frac… Read more Geostationary And Polar Satellites

Weight of an object is the force with which the earth attracts it. We are conscious of our own weig… Read more Weightlessness

Earth satellites are objects which revolve around the earth. Their motion is very similar to the mo… Read more Earth Satellites

If a stone is thrown by hand, we see it falls back to the earth. Of course using machines we can sh… Read more Escape Speed

We had discussed earlier the notion of potential energy as being the energy stored in the body at i… Read more Gravitational Potential Energy

Consider a point mass m at a height h above the surface of the earth as shown in Fig.1. The radius … Read more Acceleration Due To Gravity Below And Above The Surface Of Earth

The earth can be imagined to be a sphere made of a large number of concentric spherical shells with… Read more Acceleration Due To Gravity Of The Earth

The value of the gravitational constant G entering the Universal law of gravitation can be determin… Read more The Gravitational Constant

Legend has it that observing an apple falling from a tree, Newton was inspired to arrive at an univ… Read more Universal Law Of Gravitation