Elastic Moduli

The proportional region within the elastic limit of the stress-strain curve (re… Read more Elastic Moduli

Hooke’s Law and Stress-Strain Curve

Stress and strain take different forms in the situations depicted in the Fig. (… Read more Hooke’s Law and Stress-Strain Curve

Elastic Behaviour Of Solids, Stress And Strain

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

Energy Of An Orbiting Satellite

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

Geostationary And Polar Satellites

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

Weightlessness

Weight of an object is the force with which the earth attracts it. We are consc… Read more Weightlessness

Earth Satellites

Earth satellites are objects which revolve around the earth. Their motion is ve… Read more Earth Satellites

Escape Speed

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

Gravitational Potential Energy

We had discussed earlier the notion of potential energy as being the energy sto… Read more Gravitational Potential Energy

Acceleration Due To Gravity Below And Above The Surface Of Earth

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

Acceleration Due To Gravity Of The Earth

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

The Gravitational Constant

The value of the gravitational constant G entering the Universal law of gravita… Read more The Gravitational Constant

Universal Law Of Gravitation

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

Kepler’s Laws

The three laws of Kepler can be stated as follows:  1. Law of orbits : All plan… Read more Kepler’s Laws

Rolling Motion

One of the most common motions observed in daily life is the rolling motion. Al… Read more Rolling Motion