2DAge 8+15 min
Seesaw lever: the balance rule
A heavy load close to the pivot balances a light one far away. An interactive lever model for kids 8+: torque and balance.
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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Duration
Topic
Motion & forces
Collisions & energy
Balance
Oscillations & waves
Machines
Matter, current & light
Logic & chance
2DAge 9+15 min
Lever catapult: launch by a falling weight
A heavy weight drops onto the short arm of a lever and throws a light ball from the long one. A levers and energy experiment for kids 9+.
2DAge 8+10 min
Leaning stack: where is the center of mass
Two stacks of books: one with a careful overhang and one with too much. One stands, the other falls — the center of mass decides.
2DAge 8+10 min
A tower crane and its counterweight
Two cranes hold the same load. One has a counterweight and its jib stays level; the other’s jib tips over.
2DAge 8+15 min
A Rube Goldberg machine: a chain of events
A ball rolls down a ramp, topples dominoes, the last one hits a lever, which tosses a ball — and the ‘bell’ rings.
2DAge 7+10 min
A lever: a child lifts a heavy stone
A 20 kg load on the long arm lifts a 50 kg stone when the fulcrum is close to the stone. With the fulcrum in the middle the stone stays put.
2DAge 9+10 min
The arm as a lever: the biceps beats the load
A forearm holds 1 kg and 3 kg in the hand. The muscle attaches close to the elbow, so it pulls several times harder than the load weighs.