Moment of Inertia.

Explore the concept of moment of inertia with wands and rings of equal mass but different distribution of mass. One set has an even distributions of mass, the other a movable mass. Which wand twirls more easily? Which ring moves more quickly down an inclined plane? Contains: two wands of equal length and mass: two rings of equal diameter and mass; movable masses on one wand and one ring; Instructions included.