## Force, What is force?, Formula for Force, how many types of force, non-contact force, contact force

What is force? Force can be defined as the physical cause that tends to change the resting position or uniform motion or to change the shape and size of the body. Formula for Force                               F=ma …

## Acceleration, What is acceleration ?, Acceleration formula

What is acceleration ? A particle moving with variable velocity is said to possess acceleration. When a particle executes non-uniform motion, its velocity changes. Acceleration is defined as the rate of change of velocity. Acceleration formula Acceleration = Change in velocity ⁄ time Thus, mathematically acceleration , a = v−u ⁄ …

## Energy | types of energy | nuclear fusion | mechanical energy | nuclear power plant

What is energy? Energy – Whenever we do any work, we feel tired as we expend some energy. Energy spent appears in the form of work done. Energy is defined as the ability of a body to do work. Energy has the same units as that of work. S.I. unit …

## wave motion, transverse wave motion, longitudinal wave motion, wave motion physics

wave motion – which propagates in all directions, from the point of generation, without actual translatory motion of particles of the medium’, and the propagation of the wave is called ‘ wave motion ‘. Wave motion is classified into three different ways they are, The energy transfer The medium of propagation, …

## Simple Pendulum – Definition, Time period, Derivation, all lows, verification of lows

A point connected to a light mass is called a simple pendulum suspended with mass and fixed support.   Simple pendulum experiment A simple pendulum consists of a particle of mass ‘m’ usually called bob, suspended from a rigid support with the help of an un stretchable, mass less string. A practical …

## Surface Tension – Definition, SI Unit, CGS unit, Formula, Explanation and Examples

What is Surface tension Surface tension is the property of a liquid rest, due to to which the top surface of a liquid contained in a vessel behaves like a stretched membrane occupying minimum surface area. Surface tension formula t = f/l. Surface tension SI unit is Newton per meter. CGS …

## Inertia – Definition, types | Mass and Inertia, Examples of inertia in daily life

Definition of inertia Inertia – The tendency of an object to resist changes to its state of motion. What is Inertia Inertia – This property of the body to continue in its state of rest or uniform motion unless acted upon by a net external force ‘or’ the inability of a body to change its state unless …

## Sound | types of sound | Transmission sound, Longitudinal sound | sound experiment

What is sound ? Sound is a form of energy which causes sensation of hearing. Sound is produced by vibrating bodies. When a bell is struck with a metallic rod, it produces sound. We can sense the vibrations of the bell while it is producing sound by touching it. We …

## Speed – definition, formula, Examples | Instantaneous speed | Average speed | velocity

Speed definition – Speed is defined as the rate at which a particle covers a distance along a given path. It is given by the ratio of distance travelled to the time taken. Speed formula – Distance travelled (s)/Time (t) Note Since distance travelled is a scalar, the speed of a particle is also a scalar. The unit of speed is cm s^-1 in C.G.S. system and m s^-1 in M.KS. or S.I. system. …

## Friction – definition, types, example, advantages & disadvantages | What is Friction

Friction definition – A contact has a type of force function between two objects that opposes the expected motion between the two objects.  This force is called the friction force. This is called friction. What is Friction When an equal initial velocity is given to a block of wood, it travels …