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Rubber-Band Power Car Wind-Driven Car Middle School Science Experiment Equipment Science and Technology Teaching Aids Small Production Science and Education
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Rubber band power vehicle course courseware
how is the force of rubber band generated?
When objects such as rubber bands and springs are used by external forces, their shapes can easily change. When the shapes change, they will generate a force to restore their original shapes, which is called elasticity. When they return to their original shape, the elasticity is restored.
Experimental plan
1. The comparison experiment can be done by winding different turns on the axle of the car. Discuss and determine the number of turns of the experiment.
2. Attention should also be paid to the experiment: the cars are the same, and the rubber bands are the same. The ground is smooth to the same extent.
3. Make corresponding marks on the ground to compare their driving distance.
4. The driving distance of the car refers to the distance between the front wheels of the car from the starting point to the ending point. Think about it:
to make the car move forward, what should be the direction of the rubber band winding on the axle?
