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WORK ENERGY AND POWER - Coggle Diagram
WORK ENERGY AND POWER
work
W=(Fcosθ)S
0<=θ<90 Positive work
90<θ<=180 Negative work
θ=0 Zero Work
when a force applied on body make the body move
SI unit of work is N.m ═ joule(J).
C.G.S unit of work is dyne cm ═ erg
1joule=10^7 erg
Power
The Rate of doing work
total work / time
C.G.S – erg/sec
S.I – J/sec or Watt (W)
Practical units of power is horse power 1HP=746 W
Energy
Kinetic Energy
By virtue of its motion
Potential Energy
By virtue of its position or configuration
Relation between Kinetic Energy and momentum
Form of Energy
Solar energy
Heat energy
Chemical energy
Hydro energy
Electrical energy
Nuclear Energy
Geothermal energy
Wind energy
Sound energy
Machanical energy
