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!

Uniformly accelerated train problem

  1. May 2, 2010 #1
    After picking up passengers, a train accelerates uniformly until its speed is 100 km/hr at t= 300 s. If during this time it is traveling on a planar path that approximates the circle and line shown in the figure, find the magnitude of the train's acceleration when (a) t = 1 min and (b) t = 2 min.

    link to figure:

    I'm not sure what frame of reference to use and how to start this problem

    normal acceleration is v^2/r
    tangental acceleration is dv/dt
  2. jcsd
  3. May 2, 2010 #2


    User Avatar
    Science Advisor
    Homework Helper

    Welcome to PF!

    Hi jlopez! Welcome to PF! :smile:

    (try using the X2 tag just above the Reply box :wink:)

    First, use one of the standard constant acceleration equations to find the linear (tangential) acceleration.

    Then find the position at 1 min and 2 min, and if the path is curved then, find the speed and the centripetal acceleration (the normal acceleration). :smile:
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Similar Discussions: Uniformly accelerated train problem
  1. Uniform Acceleration (Replies: 6)