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Gravity Car Course Presentation Materials

The feature of the gravity car is that it periodically changesCenter of gravityFor vehicles that operate using their own gravity, the technical challenges to be addressed are how to reduce the force that changes the center of gravity, and how to travel longer distances with the same force.

Experimental Objectives:1. Build a car using the principle that a heavy object falling causes the wheels to rotate.

2. Have students briefly understand the law of conservation of energy

Experiment Report:

A heavy object falling pulls the wheel to rotate. So, what is at the top of the frame? It is a fixed pulley. What is its function? It can change the direction of force. Imagine students, a heavy object moves downward due to gravity, generating downward kinetic energy. By using a rope and a fixed pulley, the direction of force is changed, causing the other end to move upward. The rope pulls on the shaft and wraps around the rope, causing the wheel to rotate and achieving movement.

So what makes the car go faster and farther?

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