2DAge 8+15 min
Pendulum: what sets the period
Two pendulums of different length swing side by side: the short one makes more swings. An oscillation and period 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.
Filters · 2
Duration
Topic
Motion & forces
Collisions & energy
Balance
Oscillations & waves
Machines
Matter, current & light
Logic & chance
2DAge 8+10 min
Newton’s cradle: conservation of momentum
One ball strikes a row and exactly one ball swings out from the other end. An interactive Newton’s cradle — a lesson on momentum and energy.
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.
2DAge 9+10 min
Galton board: a bell curve from chance
Balls fall through rows of pegs and pile up in a bell shape. Hands-on probability and the normal distribution for kids 9+.
2DAge 8+10 min
Billiards: collisions and momentum
A cue ball breaks a rack on a top-down table. Momentum passes from ball to ball — a collision experiment for kids 8+.
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 9+15 min
Series and parallel circuits
Two bulbs one after another and two bulbs side by side: compare brightness, current and voltage. Click the switch — the circuit is live.
2DAge 8+10 min
A sensor opens the door: “if — then” logic
A ball rolls down a ramp and bumps a sensor, which turns green and removes the support under a second ball. Built from blocks.
2DAge 8+10 min
A ladder against a wall: which angle is safe
Two ladders lean on a wall: the steep one stands, the shallow one slides. Find out why ladders are set at about 15°.
2DAge 8+10 min
A tilted tray: when does the salt shaker slide
Identical salt shakers stand on trays tilted 10°, 20° and 35°. Find the angle where static friction no longer holds.
2DAge 9+15 min
Basketball: make the shot
A ball flies along a parabola toward the hoop. Tune the speed and angle; the sensor under the basket turns green on a score.
2DAge 8+10 min
Skate halfpipe: energy back and forth
A wheel rolls into a half-round ramp and climbs the other side almost to the same height. A chart shows the energy.
2DAge 8+10 min
Crash test: why wear a seat belt
Two carts with dummies hit a barrier. The belted one stays put, the unbelted one flies forward.
2DAge 9+15 min
Ship stability: cargo on deck and in the hold
Two identical boats are heeled over. Cargo high on a mast capsizes one, cargo in the hold rights the other.
2DAge 9+15 min
A stone arch without mortar
Nine wedge stones hold each other and a load on top. Remove the keystone and the arch collapses.
2DAge 8+10 min
An iceberg: how much is underwater
Ice, wood and foam in sea water. Only the tip of an iceberg shows above water — about one ninth.
2DAge 9+10 min
Batteries in series: brighter or burnt
One, two and three 4.5 V batteries power identical 6 V bulbs. One glows dim, two bright, three burns the bulb.
2DAge 8+10 min
Home wiring: each lamp has its own switch
Three lamps are wired in parallel, each with its own switch. Click them — the other lamps keep glowing as before.
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 8+10 min
Spring scale: a spring measures weight
Weights of 0.5, 1 and 2 kg and one unknown hang on identical springs. A spring stretches in proportion to the load, so the ruler reveals the mass.
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.
2DAge 8+15 min
Robot vacuum: rules and touch sensors
A top view: the robot bounces off furniture and picks up crumbs. A touch sensor removes each crumb and timer rules change its course.
2DAge 9+10 min
The shock absorber: keeping the body from bouncing
Two identical cars drive over bumps: the top one has only a spring, the bottom one a spring and a shock absorber. The top body bounces for a long time, the bottom one settles quickly.
2DAge 9+15 min
Earthquake: a tall tower and base isolation
A crank mechanism shakes the platform. A narrow tower falls, a wide house stands, and the same tower on soft springs and dampers survives the shaking.
2DAge 8+10 min
Spring cannon: from spring energy to range
Three identical cannons with springs of different stiffness fire at 45°. The stiffer the spring, the farther the ball goes: twice as stiff, roughly twice as far.