Motion, forces, momentum and gravity — hands-on simulations that turn the formulas of classical mechanics into something you can launch, tune, and explore in real time.
Open Projectile Motion →Launch a ball, rocket, comet or dart. Tune velocity, angle, height and gravity, then probe any point of the arc for its exact coordinates.
Open simulator →Give a puck a push and see it coast. On ice or in space, with no net force, it glides on forever — the law of inertia made plain.
Open simulator →Apply a force to a mass and watch it accelerate. Bigger force, faster pickup; heavier mass, slower — with a live velocity graph.
Open simulator →Release two carts on a compressed spring and watch them recoil with equal, opposite forces — the lighter one flying off faster.
Open simulator →Hang two masses over a pulley and watch the heavier one fall gently — a = (m₁−m₂)g/(m₁+m₂). Add pulley mass and the tensions split.
Open simulator →One pendulum on the end of another — deterministic rules, wildly unpredictable motion. Turn on the chaos twin and watch them diverge.
Open simulator →Clamp a string at both ends and see the harmonics — nodes, antinodes, and how two travelling waves add up to a standing one.
Open simulator →Compare the ideal vacuum parabola with the real, drag-shortened path — lower, shorter, and steeper on the way down.
Open simulator →Move a source and watch its wavefronts bunch ahead and stretch behind — the siren effect, right up to the Mach-cone sonic boom.
Open simulator →Play two close frequencies and hear the loudness throb at their difference — the effect musicians use to tune by ear.
Open simulator →Swing a bob through small or wide arcs, add damping, and watch the period shift and energy trade between motion and height.
Open simulator →Pull a mass on a spring and release it — explore simple harmonic motion, damping, period, and the kinetic–potential energy exchange.
Open simulator →Release a ball on a hilly track and watch kinetic and potential energy trade while the total stays fixed — until friction turns it to heat.
Open simulator →Whirl a mass in a circle to see the inward centripetal force — then cut the string and watch it fly off along the tangent.
Open simulator →Roll spheres, discs and hoops down a ramp and race them — which wins depends only on how the mass is distributed, not on size or weight.
Open simulator →Pull spinning weights inward and watch the platform whirl faster — the skater effect, with L = Iω held constant.
Open simulator →Launch a satellite around a star and shape its orbit — circle, ellipse, or escape — while Kepler's laws play out before you.
Open simulator →Two masses attract with F = Gm₁m₂/r². Explore the potential well U(r) and release them to watch energy convert and conserve.
Open simulator →One animated visual for each of Kepler's laws — the ellipse and its foci, equal areas in equal times, and the harmonic law.
Open visuals →Send two bodies at each other and compare elastic, inelastic and perfectly inelastic impacts — watch momentum hold while energy is lost.
Open simulator →Balance a seesaw by trading mass for distance — find the exact spot where m₁d₁ = m₂d₂ and the beam floats level.
Open simulator →Push a spring-mass at different rhythms and sweep across the towering resonance peak — the mechanical twin of the RLC circuit.
Open simulator →Tilt the ramp degree by degree until static friction snaps at the critical angle — then watch weaker kinetic friction take over.
Open simulator →Collide or explode two bodies and watch the gold × of their center of mass sail on in a straight line, untouched by the chaos.
Open simulator →