Viscosity
Viscosity is the property of fluid by virtue of which an internal force of friction comes into play when a fluid is in motion...
Surface Tension
Surface tension is a force per unit length (or surface energy per unit area) acting in the plane of the interface between the liquid...
Pascal’s Law
Pascal’s Law states that: Pressure in a fluid at rest is same at all points which are at the same height. A change in...
Flow of Liquid
Streamline Flow
The flow of liquid in which each of its particle follows the same path as followed by the proceeding particles, is called streamline...
Variation of Pressure with Depth
Consider a fluid at rest in a container. In Fig.1 point 1 is at height h above a point 2.The pressures at points 1...
Hydraulic Machines
The external pressure is applied on any part of a fluid contained in a vessel, it is transmitted undiminished and equally in all directions....
Capillary Rise
The contact angle between water and glass is acute. Thus the surface of the water in the capillary is concave. This means that there...
Stokes’ Law and Terminal velocity
According to Stokes’ law, the backward viscous force acting on a small spherical body of radius r moving with uniform velocity v through fluid...
Atmospheric Pressure
The pressure of the atmosphere at any point is equal to the weight of a column of air of unit cross sectional area extending...
Fluids
Fluids are those substances which can flow when an external force is applied to it. Liquids and gases are fluids. Fluids do not have...