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This demonstration conveys conservation of energy. If the ball is not started with enough potential energy (high enough along the track), it will not complete the loop. Kinetic and potential energy can be discussed as well as friction while analyzing how the type of energy changes while the total energy remains the same.
* 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 the track on the lab table. Place the ball at the bottom of the track so it does not roll away.
Hold the ball along the long end of the track and release to see if it completes the loop. Repeat as necessary. Please try to catch the balls as quickly as possible throughout this demo.
Notes:
The track should be marked at 2R, 2.5R, and 2.7R.
Courses Used In:
PHY 10111
PHY 10310
PHY 10410
PHY 30210
Discussion and Polling Questions:
What height will cause the ball to complete the loop and reach the end?
What speed does the ball need to maintain circular motion?
What are the potential and kinetic energies throughout the motion?
Equipment Needed:
Loop the Loop Track
Smooth Ball (Billiard, metal, bouncy etc.)
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