With the Figure Skating Dumbbells and Rotational Motion Demonstration Kit for physical science and physics, quickly demonstrate angular momentum with a twist. Stand on a rotating platform and use weights to control the rate of spin.
Quickly demonstrate angular momentum—with a twist! Stand on a rotating platform holding the dumbbells straight out. After a slow rotation is applied, pull in the dumbbells as close to your body as possible. Your students will be astonished with how fast you spin—just like an Olympic figure skater. This simple demonstration effectively illustrates the concepts of angular momentum, and it is safe for students to have their own hands-on experience. A reproducible student worksheet, detailed background information, and complete demonstration instructions are provided.
Concepts: Conservation of angular momentum.
Time Required: 15 minutes
Materials Provided: 2 5-lb dumbbells
Note: Rotational turntable is required and available separately.