Explain the Work, Power and Energy ?
- 1 Answers
- 987 Views
- I also Faced
- E-Mail Answers
Answer / km jyoti saini
Work:-When a force acts upon a body and point of application of force moves in the direction in which the force acts the force is said to have done work in the body. When it moves in opposite direction to that of force, work is said to be done against the force.
Unit of work:-It is the work dine by a unit of force in moving the point of application , through a distance of unit length. The CGS Unit if work is erg and FPS Unit is foot poundal. Erg and foot poundal re absolute units
Power:-It is the rate of doing work. Power of an agent is measured by the amount of work the agent is capable of performing per unit time
Power = Work done
------------
Time taken
Its units are; erg per sec. in C.G.S. system foot poundal per sec. in F.P.S. system, per sec. or Watt in M.K.S. system
The practical unit of power is Horse power(H.P)
Energy:-It is defined as the capacity of doing work. It is measured by the quantity of work that a body can
The most common unit of power is kilowatt hour. It is equal to 1000 X 3600 joules.
Potential energy:- Of a system is the energy by virtue the position or configuration of a system. It is measured by the amount of work done by a body in coming from its present position of configuration to some standard position or configuration.
Numerically potential energy= mgh
Kinetic energy:- Kinetic energy of a body is its capacity of doing work by virtue of its motion. It is measured by the amount of work that a body id capable of performing in coming to rest.
Example:-A stone when projected upward, will rise into the air and thereby do work against gravity. The kinetic energy is measured by the work done by the stone in coming to rest.
Transformation of energy:-One kind of energy be changed into energy of another form and this is known as transformation of energy
Example:-When a stone is raised to the top of a roof the energy possessed by the stone is potential. The potential energy gradually changes to kinetic energy as the stone fall to the ground the energy is wholly kinetic when the stone is on the point of just striking the ground and when it strikes the ground, the kinetic energy is changed into sound or any other form
Conservation of energy:-If one system loses energy, the other system gains an equal quantity of energy. Thus energy is not destroyed or created. This is known as principle of conservation of energy
| Is This Answer Correct ? | 0 Yes | 0 No |
What are rectifiers used for?
Tell me why is n-type conductor is neutral?
Why does a tennis ball bounce higher in Simla than it does in Culcutta?
What generates seismic waves?
Dear Sir, I have completed B.Sc(M.P.C) in Nagarjuna University. Now, I have to do Distance Education in M.Sc (Electronics or Electronics & Instrumentation). Please Provide the Details of these Cource offering Universites in Andhra Pradesh.
i want to increase my ups back time ,i have added one 12v 68ah battery to my ups but it is not working ,is it possible to make adjustment so that new battery will work.
Which atomic model did erwin schrodinger create?
Is their any rule in significant figures that maximum number of significant figures in a number are 5
What is horse-power ?
a bullet of mass m travelling at velocity v has a kinetic energy of ½mv2 when it strikes a ballistic pendulum of mass 1000 grams. The kinetic energy of the twomasses moving together just after the moment of impact is about a thousand times smaller than ½mv2. What has most of the bullets initial kinetic energy beenconverted to?
why copper is a bad conducter at low temperature?
Is it possible to convert a heat energy into magnetic energy?
General Physics 
