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: Minimum stopping distance problem

  1. Jul 4, 2005 #1
    A load of steel of mass 6000kg rests on the flatbed of a truck. It is held in place by metal brackets that can exert a maximum horizontal force of 8000 N. When the truck is traveling 20 m/s, what is the minimum stopping distance if the load is not to slide forward into the cab?
  2. jcsd
  3. Jul 4, 2005 #2
    ok here how i did it,.....im gettin an answer of 150m

    first find the acceleration in the negative x direction the brackets can exert which is.

    a= -1.33

    then find the time it takes to stop using v=vo +at

    0= 20 + (-1.33) t t= 15sec

    then find distance using x=xo +vot+.5at^2

    x = 20(15) + .5(-1.33)(15)^2

  4. Jul 4, 2005 #3
    Thanks PN

    Hey PHYSICS NOOB, I really appreciate the help. I worked the problem before coming on the forum and did'nt think that I was doing it correct. Thanks in advance again and for the fast response.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook