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A spool with a string attached can be moved in different ways depending on how the force is applied. If the string is pulled horizontally, the spool with roll toward you. If the string is pulled vertically, the spool will move away. There is also an angle that when pulled at, the spool will spin in place.
* Equipment seen in the video may vary from equipment used in ND Demonstrations. See information and images below for ND equipment and setup.
Setup:
Place spool on lab table. Make sure it won't roll off.
If the string is pulled horizontally, the spool will roll toward you. If the string is pulled more vertically, the spool will move away.
Notes:
This demo may require a little practice.
Courses Used In:
PHY 10111
PHY 10310
PHY 10410
PHY 30210
Discussion and Polling Questions:
What does the free-body diagram of the system look like?
Does the mass of the spool matter? The coefficient of friction?
Equipment Needed:
Spool with String Attached
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