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!

Translational Motion and Center of Mass

  1. Nov 8, 2009 #1
    1. The problem statement, all variables and given/known data
    A 280-kg flatcar 25m long is moving with a speed of 6.0m/s along horizontal frictionless rails. A 95-kg worker starts walking from one end of the car to the other in the direction of motion, with speed 2.0m/s with respect to the car. In the time it takes for him to reach the other end,how far has the flatcar moved?


    2. Relevant equations
    Falls under the category of Center of Mass and Translational Motion
    Ma_cm = [tex]\Sigma[/tex]F_ext


    3. The attempt at a solution
    Since the rails are frictionless I figured the mass of both the flatcar and the worker are irrelevant.
    Time it takes worker to walk to end of flatcar = (25m)(second/2.0m) = 12.5 s
    Distance flatcar travels in the time it takes worker to walk to the other end =
    (6.0m/s)(12.5s)=75m
    Is this the correct answer or am I missing something???? Input will be very much appreciated.
     
  2. jcsd
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Can you offer guidance or do you also need help?
Draft saved Draft deleted



Similar Discussions: Translational Motion and Center of Mass
  1. Center of Mass problem (Replies: 0)

  2. Center of Mass (Replies: 0)

  3. Center of mass (Replies: 0)

Loading...