Friday, December 25, 2009

Potential Energy

  • P.E=m X g X h
  • P.E=w X h
  • P.E=f X h

when, m=mass of substance,a=accelaration due to gravity,h=height from earth surface,w=weight,f=force,g=9.8m/secsq

Work,Power and Energy

  • Work=Force X Distance travelled by Force
  • W=F X S
  • Power=Performed Work /Time for performing Work
  • P=W / T
  • P=(Force X Distance travelled by Force) / Time for performing work
  • P=(F X S)/[F X S]/T

Thursday, December 24, 2009

Mass,Weight,and Volume

  • Mass =Volume X Density
  • Density=Mass/Volume
  • Volume=Mass/Density
  • Weight=Mass X Accelaration
  • Weight=Mass X Force of Gravity