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In: Gravitation

What is called a Collision? Collision is an event in which two moving bodies or one moving body and other stationary body collide (strike) with each other. Collision between two bodies is said to beRead More →

On:
In: Vibrations

How Sound Waves propagate? Sound wave are wave motion which travels through a medium due to vibrations of medium particles about their mean position. All properties of wave motion are applicable to motion of soundRead More →

On:
In: Vibrations

What are called Stationary Waves? When two identical waves of same amplitude, same frequency, same speed moving in same path but opposite in directions are superpose on each other, the resultant wave doesn’t travel inRead More →

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In: Vibrations

What is meant by Phase of a wave? Phase of a wave is the quantity which gives complete information of the medium particle at any instant of time at a particular position of wave motion.Read More →

On:
In: Mechanics

What is Centrifugal Force? Centrifugal force is a fictitious force ( also called a pseudo force ) which is experienced by an object moving in a curved or circular path. It is directed away fromRead More →

On:
In: Mechanics

What is called Centripetal Acceleration? Uniform circular motion is an accelerated motion. When a particle is in uniform circular motion, its speed remains constant but its velocity changes continuously due to the change in directionRead More →

On:
In: Mechanics

What is called Displacement Time Graph? Characteristics of motion of a moving body can be quickly understood with the aid of graphs. For this purpose, the position, velocity and acceleration of a moving body areRead More →

On:
In: Mechanics

What is called an Acceleration? During the course of journey of a moving object, its speed or velocity may change several times. Each time a change in speed occurs, it is due to acceleration ofRead More →

On:
In: Laws of Forces

What are the causes of Friction? Friction is a natural phenomenon which resists the motion of a solid material body upon another solid surface or liquid mass or gaseous atmosphere. Different theories are available whichRead More →

On:
In: Laws of Forces

Centre of Mass of a Solid Cone A solid cone may be considered to be constructed of numerous tiny particles. These tiny particles have their own masses. Hence, the total mass of the cone isRead More →

On:
In: Laws of Forces

What is meant by Centre of Gravity? Centre of gravity of a body is a fixed point where total weight of body is assumed to be concentrated. It is the point through which, force ofRead More →

On:
In: Laws of Forces

What is called Addition of Forces? A body may be subjected upon various forces acting simultaneously upon it. It is very cumbersome and difficult to analyze the effect of each force separately. So, these forcesRead More →

On:
In: Gravitation

What is called Energy? Energy of a body is defined as the capacity or ability of doing work. Kinetic energy is most important in among all forms of energies. Energy is measured by the amountRead More →

On:
In: Machine Fundamentals

What is a Pulley System? A pulley or sheave is a disc like object which has a groove on its rim. In this groove, a flexible rope or chain is wound to apply a pullingRead More →

On:
In: Machine Fundamentals

What is Maximum Efficiency of a Machine? Maximum efficiency of a machine is defined as the ratio of output work and minimum input work required for the work by the machine. Therefore, maximum efficiency isRead More →