Your SlideShare is downloading. ×
  • Like
Ix physics full notes chapter 3
Upcoming SlideShare
Loading in...5
×

Thanks for flagging this SlideShare!

Oops! An error has occurred.

×

Now you can save presentations on your phone or tablet

Available for both IPhone and Android

Text the download link to your phone

Standard text messaging rates apply

Ix physics full notes chapter 3

  • 1,712 views
Published

 

  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Be the first to comment
    Be the first to like this
No Downloads

Views

Total Views
1,712
On SlideShare
0
From Embeds
0
Number of Embeds
0

Actions

Shares
Downloads
27
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. Work and EnergyKey Learning :1. Work is done when force acting on a body produces displacement in it.2. Work done = Force x displacement in the direction of force3. Work is a scalar quantity.4. The SI unit of work is joule (j).5. Work done is positive if the angle between force and displacement isacute.6. Work done is negative if the angle between force and displacement isobtuse.7. Work done on an object by a force would be zero if the displacement ofthe object is zero.8. When a body moves along a circular path, the force acts along the radiusof the circular path and the motion of the body is along the tangentialdirection. Therefore, the angle between the direction of motion and the forceis 90°. Hence, no work is done on a body when it moves in a circular path.9. An object having a capability to do work is said to possess energy.10. The energy possessed by a body by virtue of its motion is called kineticenergy.11. The energy possessed by a body by virtue of its position or change inconfiguration is called potential energy.12. Power is defined as the rate at which work is done.13. The change of one form of energy into another is called transformationof energy.For More School Notes & Projects Visit www.toppersarena.com
  • 2. 14. Law of conservation of energy states that energy can neither be creatednor be destroyed but can be transformed from one form to another.15. Energy exists in nature in several forms such as kinetic energy, potentialenergy, heat energy, chemical energy etc. The sum of the kinetic andpotential energies of an object is called its mechanical energy.16. The energy used in one hour at the rate of 1kW is called 1 kW h.Top Formulae:For More School Notes & Projects Visit www.toppersarena.com