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: Overcoming static friction - easy

  1. Oct 10, 2012 #1
    1. The problem statement, all variables and given/known data
    A very strong 100kg man is having a tug of war with a 1500 kg elephant. The coefficient of static friction for both on the ground is 1.0.
    a) Find the force needed to move the elephant.
    b) What would happen if the man could actually exert such a force?

    2. Relevant equations
    Ff = μs * Fn
    FN = mg

    3. The attempt at a solution
    a) Using the above equations, I got the total frictional force, and thus the applied force to be 14,700 N. Is this correct?
    b) The man would slip and fall. <----- Is that what they're looking for?
    Last edited: Oct 10, 2012
  2. jcsd
  3. Oct 10, 2012 #2


    User Avatar
    Science Advisor
    Homework Helper

    hi joel! :smile:
    looks good! :smile:
    he would slip, but why would he fall?

    hint: what would happen on ice? :wink:
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook