3DAge 8+10 min
Gears: the gear ratio
Gears with 12 and 24 teeth: the small one spins twice as fast, reversed. A gears experiment for kids 8+.
Projects gallery
Physics experiments
Interactive experiments for kids, students and teachers. Run each one right on the page, then open a copy in the Tymora editor and change mass, friction, elasticity or gravity. Every experiment comes with discussion questions and a version to try at home.
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Motion & forces
Collisions & energy
Balance
Oscillations & waves
Machines
Matter, current & light
Logic & chance
3DAge 8+10 min
Belt and chain: transmitting rotation
Belt and chain like on a bike: rotation keeps its direction, speed depends on wheel size. For kids 8+.
3DAge 8+10 min
A mixer: gears and beater speed
One motor spins two beaters through gears: they turn against each other twice as fast as the motor and whip the “dough” in the bowl.