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!

Kinetics of rigid bodies

  1. Feb 18, 2006 #1
    can anyone pls explain to me what is sliding and rolling of a let say a wheel??I'm really confuse about it
    thanx
     
  2. jcsd
  3. Feb 18, 2006 #2

    arildno

    User Avatar
    Science Advisor
    Homework Helper
    Gold Member
    Dearly Missed

    Ok:
    Imagine a surface wetted with paint, and place a moving wheel upon it.
    Now, there are two extremes that may happen:

    1) The wheel is merely rotating, but its center is at rest.
    Thus, gradually, the whole rim of the wheel gets painted, but on the SURFACE, paint is only removed from a SINGLE point (the contact point).

    We say that the wheel is SPINNING.

    2) The wheel moves forward, but the only point on the wheel that gets painted is the one point always in contact with the surface.
    On the SURFACE, a line is traced out in the paint.

    We say that the wheel is SLIDING.

    And then:
    With ROLLING, we mean that the arc painted onto the wheel is always of equal length as the line traced out on the wetted surface.
     
  4. Feb 18, 2006 #3
    ok.thanx...
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?