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: Applied force

  1. Nov 28, 2011 #1
    1. The problem statement, all variables and given/known data

    m= 1.45X10^6 kg
    w=1.00X10^2 MJ
    a=0 m/s^2
    to over come the force resistance that was 2.00 percent of the building's weight

    2. Relevant equations

    Fa=Ff (force applied=force friction)

    3. The attempt at a solution

    Fa= Fn-Ff

    Im confused on how to find the force friction, the Fn is 0 due to the fact that the acceleration is 0, but i have no clue how to find the Ff.
     
  2. jcsd
  3. Nov 29, 2011 #2
    I think you should post the whole problem on #1. I'm not really sure what's happening here.
     
  4. Nov 29, 2011 #3
    I am hesitant to say that I cannot help you. You must post the "proper context" of the problem. Just giving off values will not assist you. I am also not sure what are you trying to find out. The force of friction ? If that is so then why don't you consider the acceleration due to gravity if force resistance is 2.00 percent of the building's weight.
     
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook