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!

Help with rolling motion

  1. Jul 14, 2004 #1
    Hi, Im working on the following problem:

    As you drive down the road at 17 m/s you press on the gas pedal and speed up with a uniform acceleration of 1.12m/s2 for 0.65s. If the tires on your car have a radius of 33cm , what is their angular displacement during the period of accceleration?

    This is what I did so far,

    (1.12m/s^2) / 0.65s = 1.72 m/s acceleration

    then 17m/s - 1.72 m/s = 15.28

    15.28/.33m = 46 displacement?

    Im not sure this was right?? :frown:
  2. jcsd
  3. Jul 14, 2004 #2


    User Avatar
    Science Advisor
    Homework Helper

    ?? The acceleration is 1.12 m/s^2 as you stated in the problem.

    You can use the formula for the distance traveled when traveling at constant acceleration.

    The distance traveled is

    [tex]d=17(0.65)+1/2(1.12)(0.65)^2=11.3 m[/tex]

    If the wheels don`t slip then the distance traveled when the wheels make one revolution is equal to their circumference [tex]2\pi R[/tex]
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Help with rolling motion
  1. Rolling Motion (Replies: 2)

  2. Rolling Motion (Replies: 2)

  3. Rolling Motion (Replies: 24)

  4. Rolling motion (Replies: 3)