friction

Rotating Platform

Purpose: Conservation of Angular Momentum. Parts: Rotating platform Weights Bicycle wheel Setup: Keep the platform on the floor, let a volunteer stand on it(feet should spread out and align the body so that the center of mass is right over the center of mass of the platform). Continue reading »

Penny on turntable

Purpose: Motion of an object traveling in a circle. Parts: Turntable Penny Setup: Plug the turn table lead to the wall outlet, set a desired speed. Place few pennies with different distances from the center. Turn the table ON with the little black switch. Continue reading »