1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: 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


    User Avatar
    Science Advisor
    Homework Helper

    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?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted