1K10.30 • Dynamic Torque: Walking the Spool

Photo shows the demonstration used at the University of Texas at Austin.

Instructions / Notes:

• Pull strap to the left so that it is horizontal to the surface of the table.
• Have students predict the direction the spool will turn when strap is pulled to the right.
• Angle between strap and table determines which direction the spool will roll.
• At some angle the spool will remain stationary.

Drawing by courtesy of the University of Minnesota.

Last updated on July 25, 2024