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!

Angular and Linear Acceleration on a Wheel

  1. Mar 22, 2012 #1
    1. The problem statement, all variables and given/known data
    A 68 cm diameter wheel accelerates uniformly about its center from 150 rpm to 270 rpm in 4.1 s.

    1. Determine its angular acceleration. α = 3.1 rad./s^2

    2. Determine the radial component of the linear acceleration of a point on the edge of the wheel 1.6 s after it has started accelerating.


    2. Relevant equations

    ω final = ω initial + αt
    v final = v initial + at
    ω * r = v

    3. The attempt at a solution

    1. (15.7079 rad./s) + (3.0649 rad./s^2)(1.6s)
    ω = 20.61174 rad./s

    (20.61174 rad./s)(0.34m) = 7.0079916 m/s (final velocity)
    (15.7079 rad./s)(0.34m) = 5.340686 m/s (initial velocity)

    7.0079916 m/s - 5.340686 m/s / 1.6 s = 1.042066 m/s^2
     
  2. jcsd
  3. Mar 22, 2012 #2

    tiny-tim

    User Avatar
    Science Advisor
    Homework Helper

    Hi PeachBanana! :smile:
    No, I think they're asking for the centripetal acceleration (ω2r).
     
  4. Mar 22, 2012 #3
    tiny-tim: Thank you so much. That is much clearer now. The way it was worded was strange.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook




Similar Discussions: Angular and Linear Acceleration on a Wheel
Loading...