Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Simple F(x) problem -

  1. Mar 3, 2008 #1
    A pipe bending machine applies a force (in newtons) given by F(t) - 19.2t - 3t^2, where t is in seconds. The impulse delivered to a pipe during the interval t =0 to 6.4 sec equals..

    The answer is 131 N-s. But why.. can somebody explain it step by step. URGENT help required.

    Thanks alot.
     
  2. jcsd
  3. Mar 4, 2008 #2
    look here:

    http://en.wikipedia.org/wiki/Impulse

    you need to calculate the integral

    [tex] \int _0^{6.4} 19.2 t - 3t^2 dt [/tex]

    asuming you ment F(t) = 19.2 t - 3t^2 , not F(t) - 19.2 t - 3t^2.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook