1. Not finding help here? Sign up for a free 30min 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!

Two train cars being coupled on tracks

  1. Apr 22, 2012 #1
    3. Two train cars are to be coupled on the tracks. One of the cars, say A is initially at rest. The other car, say B is travelling at a speed v toward A: Car B is empty, whilst car A is full of pig iron and has a mass of 102mB: After coupling, the two cars travel a distance of 20 meters before coming to rest. The coefficient of static friction of iron-on-iron is 1.1. Assume the tracks are level.
    (a) What was the initial speed v of car B?
    (b) How much energy was given up to the coupling process?
     
  2. jcsd
  3. Apr 22, 2012 #2
    Again, please show us your attempt at a solution. We are not allowed to help unless you have shown that you have already tried the problem.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Two train cars being coupled on tracks
Loading...