1. The product consists of shell, base, touch screen, power swing arm (built-in force sensor), weight and counterweight Weights, 12V power adapter and other components. 2. The base of the shell is molded and assembled at one time by ABS plastic injection molding process to ensure the safety and stability of the experiment process. 3. Built-in sensors, display screens and drive motors, no need to connect to the acquisition terminal, and support the operation status of the rotary arm through the touch screen to display experimental data and images at the same time. 4. Built-in wireless transmission module, connected to the collection terminal through data lines or wirelessly; 5. Equipped with at least four specifications of weights and four specifications of counterweights, which is convenient for flexible quality changes and accurate counterweights. 6. Function: used to verify the relationship between centripetal force and mass, radius and rotational speed.

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