This Homemade Wind Up Racer Actually Works and It's Amazing
This Homemade Racer Actually Works and It's Amazing
Made for parents and teachers
Hey, welcome back to Kids Fun Science! Today, we're going to show you **how to make** an awesome wind-up racer in this exciting **science experiment**. It's a fantastic **do it yourself** project perfect for **science for kids** to explore basic **stem** principles of energy transfer. Watch it zoom across the floor!
Chapters
0:08 Experiment
0:31 What you need
0:46 how to set it up
3:23 Wind it up
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This is a classroom STEM activity sheet called “Wind Up Racer: Exploring energy conversion with a twist!”
Activity type
• Hands‑on engineering/physics activity using a simple machine “wind up racer” built from a cylinder, rubber band, straw, and paperclip.
• Focuses on energy conversion, especially how twisting a rubber band stores elastic potential energy and then converts it to kinetic energy as the device rolls.
• Used as an inquiry experiment where students vary the number of twists and measure how far or how long the device moves.
Science Behind it
Turning the coffee stir stick, which acts as a lever, will wind up the rubber band and store elastic potential energy. When the rubber band is allowed to unwind, the potential energy (stored energy) is converted into kinetic energy (energy of motion). The more twists in the rubber band, the more potential energy is stored, resulting in more kinetic energy being available to move the Wind Up Racer through a greater distance.
If distance and time data are measured, these data can be graphed to reveal patterns in relation to the number of twists in the rubber band. For example, a simple graph can be made with the number of twists along the x-axis (independent variable) and the distance traveled along the y-axis (dependent variable). Similarly, one can graph the time of each traveled distance vs the number of twists. In addition to this graphical analysis, it is possible to calculate the average speed of the Wind Up Racer by taking the average distance traveled and dividing that value by the average time measured for each number of twists in the rubber band.
#windupracer #rollerracer