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: Dynamics question, test tommorrow

  1. Jul 9, 2009 #1
    Dynamics question, test tommorrow :(

    Hello, need some help on this one for the test. The solution is 3.9 m/s^2 in the book, im not sure what i have done wrong.

    1. The problem statement, all variables and given/known data

    http://img196.imageshack.us/i/questionu.jpg/

    2. Relevant equations



    3. The attempt at a solution

    Here is my attempt. sorry about the big X i was frustrated.

    http://img269.imageshack.us/i/attempt.jpg/
     
  2. jcsd
  3. Jul 9, 2009 #2
    Re: Dynamics question, test tommorrow :(

    hmmmmmmmmm, got it.

    At the very end where i have Fnet = m a

    m is actually (2.5 + 5.5)
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook