Thursday, 8 September 2011

4.10

4.10
10 June 2011
11:51
PFY p.112
·         
4.10 understand that work done is equal to energy transferred
Image001
      A) The work done (measured in Joules) is equal to the force 
     (in newtons) multiplied by the distance moved (in meters)
B) 1 joule is the work done when a force of one newton moves 
    through a distance of one meter (in the direction  of the force)
C) work done = energy transferred
Image002
WD= Fxd = 5x2= 10J
Image003
WD= Fxd = 500x40 = 20,00
the energy change is KE to GPE

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