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Homework Help: Power homework problem

  1. Nov 9, 2008 #1
    1. The problem statement, all variables and given/known data
    A machine does work at a rate given by , P=ct^2 where c= 18 W/s^2 and t is time.
    Find the work done by the machine between 9.0s and 18s .

    2. Relevant equations

    P=w/t

    3. The attempt at a solution

    no ideas
     
  2. jcsd
  3. Nov 9, 2008 #2
    Re: Power

    Integrate with respect to time because:

    [tex]P=\frac{dW}{dt}[/tex].
     
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