Physics 101- Introduction to Mechanics
March 27- Rolling Motion

 

 

 

 
 

 

  A wheel of radius R is rolling without slipping.  The velocity of the point on the rim that is in contact with the surface, relative to the surface, is
    a) Equal to Rw in the direction of motion of the center of mass.
    b) Equal to Rw opposite the direction of motion of the center of mass.
    c) Zero.
    d) Equal to the velocity of the center of mass and in the same direction.
    e) Equal to the velocity of the center of mass but in the opposite direction.

 
 
 
 
 
 
 

Here's a photo of a bicycle wheel rolling without slipping.  The camera is stationary with respect to the ground.  The moderately long shutter speed shows us that the top portion of the rim is moving faster as it is blurred.  The part in contact with the ground is not moving (with respect to the ground and camera) as is indicated by the "frozen" spokes.

 
 
 

 

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Jeff Phillips
phillips@lmu.edu
Loyola Marymount University
Spring 2002