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Work, Energy & Power

work done equation

  • W = work done in joules (J)
  • F = force in newtons (N)
  • s = displacement in metres (m)
  • q= angle between the direction of motion of the object and the direction of the force in degrees (o)

 

power equation

  • P = power in watts (W)
  • DW = work done in joules (J)
  • Dt = time in  seconds (s)

 

power equation 3

  • P = power in watts (W)
  • F = resultant force in newtons (N)
  • v = velocity in metres per second (ms-1)

efficiency equation 3