Your SlideShare is downloading. ×
Amit sharma and mohineesh sharma
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Saving this for later?

Get the SlideShare app to save on your phone or tablet. Read anywhere, anytime - even offline.

Text the download link to your phone

Standard text messaging rates apply

Amit sharma and mohineesh sharma

280
views

Published on

biology

biology

Published in: Technology, Business

0 Comments
0 Likes
Statistics
Notes
  • Be the first to comment

  • Be the first to like this

No Downloads
Views
Total Views
280
On Slideshare
0
From Embeds
0
Number of Embeds
1
Actions
Shares
0
Downloads
3
Comments
0
Likes
0
Embeds 0
No embeds

Report content
Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
No notes for slide

Transcript

  • 1.  
  • 2. Submitted To - Mrs Ritu Sexana Submitted By - Amit Sharma and Mohineesh Sharma
  • 3.  
  • 4. The intuitive meaning of work is quite Different from the scientific definition of Work . In everyday activity , the term ‘ work’ is used equally for mental and physical work involving muscular force.
  • 5.
    • In physics , the term work is used in special technical sense and has a much more precise definition .
    • DEFINITION
    • When force is acted on a body and the body get displaced through a distance
    • then work is said to be done .
  • 6.
    • There are two conditions that must be
    • satisfied in work done by a body .
    • A force is applied on the object .
    • The object be displaced from its original position.
  • 7.
    • Mathematically Work is defined as the product of force acting on the body and
    • displacement is produced in the body .
    • Formula of work is :
    • W = FScosθ
  • 8. 2 of 10 Peter Loader @ TLT θ (Angle in degree) COSθ O 1 90 0 180 -1
  • 9.
    • CASE 1
    • When the direction of force and displacement are same .
    • we know
    • W = FScosθ (θ = 0 [in degree] )
    • W =FScos180
    • W =FS* 1
    • W =FS
    • Example- when a body is dropped from a certain height.
  • 10.
    • SI Unit
    • SI unit of work = SI unit of force * SI unit of displacement
    • Joule (J) = N * m
    • J = Nm
  • 11.
    • CGS Unit of work = CGS unit of force *
    • CGS unit displacement
    • erg = dyne * cm
    • erg = dynecm
  • 12.
    • We know
    • 1j =1N * 1m
    • 1j = 100000 dyne * 100 cm
    • 1j = 10000000 erg
  • 13.
    • 1 kilo Joule = 1000 Joule
    • 1 Mega Joule =1000000 Joule
  • 14. ENERGY KINETIC ENERGY POTENTIAL ENERGY MECHANICAL ENERGY LIGHT ENERGY HEAT ENERGY SOLAR ENERGY SOUND ENERGY ELECTRIC ENERGY NUCLEAR ENERGY CHEMICAL ENERGY HEAT ENERGY TIDAL ENERGY WIND ENERGY HYDRO ENERGY
  • 15.
    • Energy of an object is defined as its capacity for doing work and it is measured
    • by the total quantity of work it can do.
    • OR
    • Ability to do work is called energy .
  • 16.
    • SI unit of energy is same as the SI unit
    • of work. i.e. joule (J).
  • 17.
    • There are many types of energy but Kinetic energy and Potential energy have mathematical .
  • 18.
    • Solar Energy
    • Heat Energy
    • Light Energy
    • Chemical Energy
    • Wind Energy
    • Hydro Energy
    • Sound Energy
    • Electric Energy
    • Magnetic Energy
    • Tidal Energy
    • Nuclear Energy
    • Mechanical Energy
  • 19.
    • Solar Energy
    • The energy radiated by the sun is called solar energy used in photosynthesis .
    • Heat Energy
    • When energy released by gas , oil , petroleum products is called heat energy .
  • 20.
    • Light Energy
    • Energy which produce sensation of vision.
    • Chemical Energy
    • Energy which is produced by fuels , chemicals etc.
  • 21.
    • Wind Energy
    • Energy produced by moving air .
    • Hydro Energy
    • The energy produced by flowing water is called hydro energy.
  • 22.
    • Sound Energy
    • Energy which produced by the vibration of object and produced sensation of hearing .
    • Electric Energy
    • Energy Produced by flow of charge .
  • 23.
    • Magnetic Energy
    • Energy produced by magnet .
    • Tidal Energy
    • Energy produced by high and low tides .
  • 24.
    • Kinetic Energy
    • The energy in a body by virtue of its motion is called Kinetic energy .
    • Potential Energy
    • The energy in an object by virtue of its position or configuration is called its potential energy .
  • 25.
    • Nuclear Energy
    • The energy which produced by nuclear reactions is called nuclear energy .
    • Mechanical Energy
    • The sum of kinetic and potential energy is called mechanical energy .
  • 26.
    • Mathematical definition of kinetic energy is equal to half the product of mass and square of velocity .
  • 27.
    • Mathematically potential energy is equal to the product of mass , acceleration due to gravity and height .
    • P.E = M * g * H
  • 28.
    • The conversion of energy from one form of energy to another form of energy is called energy transformation .
  • 29.
    • According to law of conservation of energy can neither be created nor be destroyed only it can be destroyed from one form of energy to another form of energy .
  • 30. POWER
  • 31.
    • Rate of doing work done is called power .
    • OR
    • Work done per unit is called power .
    • W =Work Done
    • T = Time
    • P = W / T
  • 32.
    • si unit of power = si unit of wok / si unit time
    • W = J /
    • SI Unit of power is Watt [ W] and is named in the honor of James Watt .
  • 33.
    • Practical unit of power or a unit which is exclusively used in engineering or in automobiles is called horse power (hp) .
    • 1 hp = 746w
  • 34.
    • It is defined as the ratio of total workdone by the body to the total time taken by the body
    • AP = Total workdone / Total time
  • 35.
    • Commercial unit of electric energy is Kilowatt-Hour (KWH).
    • Commercial Unit of electric energy i.e. KWH is used in household industries for measuring electric energy consumption .
  • 36. THANK YOU