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Rev. Notes > IGCSE > Energy, Work and Power
 
 
Previous Topic Energy, Work and Power Next Topic

Topics
 
Energy Kinetic energy Potential energy
Different types of energy Law of conservation of energy Energy resources
Work Power
 

Work

Work is done when a force displaces an object.

Work can only be done if the system has energy when work is done energy is transferred either to the system or by the system.

Work done = force * distance moved in the direction of the force


W=FxS


The SI unit of work is Joule.


If something is lifted up against the gravitational field then work done is equal to gravitational potential energy

Work done=mgh

 
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View Comments on this Chapter - Total Comments (14)
 
john bertey Said :
thanks alot love this website
 
  17/04/15 08:08 PM
   
kemo Said :
please add diagrams to the topic very helpful
 
  01/02/15 03:39 PM
   
GGGG Said :
Awsm, notes but need a diagram
 
  18/08/14 07:48 AM
   
rebecca Said :
Very helpful website, thank you alot!!
 
  05/08/14 08:01 PM
   
Anonymous Said :
Thanks for these! Maybe a few more examples of worked questions/equations would be useful :-)
 
  07/05/14 09:41 AM
   
pratik Said :
u r awesome
 
  19/02/14 11:24 AM
   
hassaan khalid Said :
good notes
 
  14/01/14 06:50 PM
   
Lucy Said :
great notes! keep it up :)
 
  08/09/13 06:20 PM
   
Pak Hye Ri Said :
Really great notes thankyou ! :D Not that much questions though
 
  06/09/13 12:25 PM
   
anonymos Said :
best notes c:
 
  12/03/13 05:19 PM
   
Ghost Said :
These were really helpful notes... I got what I was looking for Thanks!!
------------------------------------------------------------------------------------- Admin Replied:

Thanks for your coment and keep visitng :)

 
  30/04/12 12:04 PM
   
Lujain Mohammed Said :
These notes are really helpful. Thanks a lot!
------------------------------------------------------------------------------------- Admin Replied:

Thank you for your comment

 
  03/04/12 05:09 PM
   
Adam Said :
There is some material about the pressure here http://physicsatweb.com/rev.php?id=Pressure
 
  23/12/11 07:52 PM
   
hermione felfel Said :
the notes are really good but i cant find anything about pressure
------------------------------------------------------------------------------------- Admin Replied:

Consider reading the chapter "Pressure"

 
  13/12/11 10:05 AM
 

 

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