PHYSICS   LECTURE   DEMONSTRATIONS

Small and Large Spool


 UNIT: Rolling of rigid bodies

PURPOSE: Explore the relationship between rotational and translational motion in this simple but intriguing system

EQUIPMENT: Large spool with a string 

SUGGESTIONS: Which way will the spool roll if 
1. String is pulled "over" the spool
2. String is pulled "under" the spool
3. Demonstrate critical angle

DISCUSSION:  --
1.
2.
3.
4.
 

1. Pulling with the string over the spool
2. Spool moves forward
3. Pulling with the string under the spool
4. Spool moves forward