United Scientific Inertia Demonstrator

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This durable inertia demonstrator works reliably every time and is a great improvement on traditional versions of this classic experiment. A steel ball rests on a thin metal card o n top of a pillar, and a spring-loaded catch is mounted next to the pillar. When the catch is released, a piston strikes the edge of the metal card sharply. The card flies out from under the ball, which remains in place on top of the pillar due to its large inertial mass. The card is tethered to the aluminum base for easy recovery after the experiment. In a second experiment the cord is pulled slowly and steadily. In this case, the ball and card fall off the pillar together. Includes activity guide. Approximate product dimensions are 5" x 3" x 2". Show more