288 published interactive labs
Simulation Hub — Interactive Simulations
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288 simulations found
Impulse & Momentum Simulator: Crumple Zones & J = FΔt
Interactive impulse–momentum simulation: crash a mass into a rigid wall vs a crumple zone and watch the same momentum change spread over a longer time cut the peak force. See J = F·Δt = Δp in action.
Intermediate · 10–20 minutesOpen simulation →physicsWork & Power Simulator: W = Fd·cosθ and Why Carrying Does No Work
Interactive work and power simulation: push a box at an angle and see W = F·d·cosθ. Discover why a perpendicular force does zero work, when work is negative, and how power = work / time.
Foundation · Under 10 minutesOpen simulation →physicsAngular Momentum Simulator: The Spinning Skater Effect
Interactive conservation of angular momentum: pull a spinning skater's arms in and watch them whirl faster because L = Iω stays constant. See moment of inertia, spin rate, and rotational energy trade off.
Intermediate · 10–20 minutesOpen simulation →physicsNewton's Second Law Simulator: F = ma, Force, Mass & Acceleration
Interactive F = ma simulation: push a cart against friction and watch the net force set its acceleration, with a live velocity–time graph whose slope is a. See how doubling force or mass changes the motion.
Foundation · Under 10 minutesOpen simulation →physicsPulley Systems Simulator: Mechanical Advantage & Block-and-Tackle
Interactive pulley simulation: add rope segments to a block-and-tackle and watch the effort force drop to W/n. Lift heavy loads with a small pull, and see why work is still conserved.
Foundation · Under 10 minutesOpen simulation →physicsPascal's Principle Simulator: Hydraulic Press & Force Multiplication
Interactive hydraulic press simulation: a small force on a small piston lifts a heavy load on a big piston. See Pascal's principle F₂ = F₁·(A₂/A₁), the pressure, and why work is still conserved.
Foundation · Under 10 minutesOpen simulation →physicsRelative Velocity Simulator: River Crossing & Boat Drift
Interactive relative velocity simulation: steer a boat across a flowing river and watch v_ground = v_boat + v_current carry it downstream. Aim upstream to cancel the drift and land straight across.
Advanced · 20+ minutesOpen simulation →physicsVector Addition Simulator: Drag Vectors, See the Resultant
Interactive vector addition: drag two vectors and watch the resultant update live using the tip-to-tail and parallelogram methods. See components, the angle between, and why |A+B| ≤ |A|+|B|.
Intermediate · 10–20 minutesOpen simulation →physicsCircular Motion Simulator: Centripetal Force & the Cut-String Test
Interactive circular motion simulation: whirl an object on a string, see the centripetal force F = mv²/r, then cut the string and watch it fly off along the tangent — not radially outward. Adjust radius, speed, and mass.
Foundation · Under 10 minutesOpen simulation →physicsEnergy Conservation Simulator: KE, PE & the Half-Pipe
Interactive energy conservation simulation: release a ball on a frictionless half-pipe and watch kinetic and potential energy trade off while the total stays constant. Add friction to see energy turn into heat.
Foundation · Under 10 minutesOpen simulation →physicsHooke's Law Simulator: Springs, F = kx & Series vs Parallel
Interactive Hooke's law simulation: hang masses on a spring and watch it stretch by x = mg/k. See the force–extension line, elastic energy ½kx², and why springs in series are softer while parallel are stiffer.
Foundation · Under 10 minutesOpen simulation →physicsTorque & Balance Simulator: Seesaw, Moments & Levers
Interactive torque simulator: place weights on a beam and watch it tip or balance. See why m₁·d₁ = m₂·d₂ lets a small mass far out balance a heavy mass close in — the moment-arm idea behind seesaws, wrenches, and cranes.
Intermediate · 10–20 minutesOpen simulation →physicsBuoyancy Simulator: Archimedes' Principle, Float or Sink?
Interactive buoyancy simulation: drop objects into water, oil, or mercury and watch them float or sink. See why the submerged fraction equals the density ratio ρobject/ρfluid — the tip of the iceberg.
Foundation · Under 10 minutesOpen simulation →physicsInclined Plane & Friction Simulator: Will the Block Slide?
Interactive inclined plane simulation: adjust the ramp angle, mass, and friction to see the force vectors and whether a block slides. Discover the critical angle arctan(μs), independent of mass and gravity.
Foundation · Under 10 minutesOpen simulation →physicsAcoustics & Sound Waves — Interactive Simulator
Explore standing waves, harmonics, Chladni patterns, and beat frequencies with this free online acoustics simulation. Adjust frequency, amplitude, and mode interactively.
Foundation · Under 10 minutesOpen simulation →physicsBlack Hole Simulator — Gravity & Spacetime
Simulate black hole physics online: gravitational lensing, accretion disk, Kerr frame-dragging, and photon sphere. Adjust mass and spin to launch particles and watch GR effects.
Advanced · 20+ minutesOpen simulation →physicsChaos Theory Simulator — Lorenz & Double Pendulum
Explore chaos theory with this free online simulator: double pendulum butterfly effect, Lorenz attractor, logistic map bifurcation, and phase-space portraits. Interactive and visual.
Intermediate · 10–20 minutesOpen simulation →physicsCircuit Lab — Interactive Schematic & DC Simulator
Build and simulate DC circuits online with this free circuit lab. Place resistors, capacitors, LEDs, voltage sources, and more, then run nodal analysis to see voltage, current, and power.
Intermediate · 10–20 minutesOpen simulation →physicsCollision Lab — Elastic & Inelastic Physics Simulator
Simulate elastic, inelastic, and perfectly inelastic collisions online. Choose presets like Newton's cradle or 2D collisions, adjust restitution, and track momentum conservation live.
Intermediate · 10–20 minutesOpen simulation →physicsCondensed Matter Physics Simulator — Phonons & Bands
Explore condensed matter physics online: phonon dispersion, electronic band structure, Meissner effect, and Ising model magnetism. Adjust temperature and band gap interactively.
Advanced · 20+ minutesOpen simulation →physicsDoppler Effect Simulator — Sound, Shock Waves & Redshift
Visualize the Doppler effect, sonic boom, and cosmological redshift with this free online simulation. Adjust source speed and frequency to see wavefront compression and spectral shifts.
Foundation · Under 10 minutesOpen simulation →physicsDoppler Lab — Sound & Light Shift Interactive Simulator
Explore the Doppler effect for sound and light in this free online lab. Move sources and observers, play audio of the shifted pitch, and observe shock waves and galactic redshift.
Foundation · Under 10 minutesOpen simulation →physicsElectric Fields Simulator — Interactive Charges & Potential
Visualize electric fields, equipotential lines, and potential maps with this free online simulator. Place positive and negative charges and see field lines and vectors update instantly.
Intermediate · 10–20 minutesOpen simulation →physicsElectromagnetic Induction Simulator — Faraday & Lenz
Explore electromagnetic induction online: Faraday's law, Lenz's law, AC generators, and transformers. Adjust coil turns and field strength to see induced EMF and flux graphs in real time.
Intermediate · 10–20 minutesOpen simulation →Learn science by changing the variables
SciFunLab turns equations into experiments. Compare a projectile motion simulation with the forces behind the Magnus effect, then investigate viscosity inside the fluid dynamics lab. Each page opens the working model directly, with no synthetic worksheet or course page between you and the experiment.
Advanced learners can trace light in the ray tracing lab, inspect atomic signals with NMR spectroscopy, model populations in the ecology simulation, or practise network design with the subnetting simulator.
Browse the engineering simulation collection, play browser physics games, or see how this catalogue compares as a PhET alternative for free interactive STEM exploration.