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Force and Work problem

  1. Jun 19, 2014 #1
    I was given the problem:

    A single force acts on a 3.6 kg particle-like object in such a way that the position of the object as a function of time is given by x = 4.1t - 0.64t2 + 2.0t3, with x in meters and t in seconds. Find the work done on the object by the force from t = 0 to t = 8.1 s.

    I know that W= integral of Fx, but how do I find Fx?
     
  2. jcsd
  3. Jun 19, 2014 #2

    AlephZero

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    If ##x(t) = 4.1t - 0.64t^2 + 2.0t^3##, what else can you find about the motion, as well as the displacement?

    That's one way to solve the problem, but what else is W equal to?
     
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