Published concept labs
NDA and CDS physics study map
Published interactive physics labs for inspecting motion, oscillations, circuits, refraction, and waves while revising the concepts in your NDA or CDS materials.
How to use this page
Open a lab, vary one input at a time, and write down the relationship you observe. Then return to your textbook or problem set and explain the same relationship without the visual aid.
Motion and mechanics
Change the inputs and observe the resulting trajectory, period, or relative motion before returning to a problem set.
Published interactive lab
Projectile Motion Simulator — Interactive Physics Lab
Launch a projectile with adjustable angle, speed, gravity, mass, and air resistance. Compare planets, target a landing point, and read live range and height data.
Concepts: projectile motion, parabolic trajectory, air resistance
Published interactive lab
Pendulum Lab — Multi-Pendulum Simulator with RK4
Simulate up to 4 pendulums online with RK4 integration. Adjust length, mass, angle, damping, and coupling. Compare planets, view phase space and energy graphs. Free interactive pendulum simulator.
Concepts: simple pendulum, damped oscillation, coupled pendulums
Published interactive lab
Relative 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.
Concepts: relative velocity, river crossing problem, vector addition
Published interactive lab
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.
Concepts: impulse, momentum, impulse-momentum theorem
Electricity, light, and waves
Explore circuit behaviour, electric fields, refraction, and wave patterns in the published labs.
Published interactive lab
Circuit 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.
Concepts: Ohm's law, nodal analysis, Kirchhoff's laws
Published interactive lab
JEE Electric Fields — Interactive Physics Practice
Practice JEE-level electric field and potential problems interactively, visualizing field lines and equipotentials for point charges, dipoles, and charge distributions.
Concepts: electric field, electric potential, Gauss's law
Published interactive lab
Refraction Lab — Snell's Law & Total Internal Reflection
Explore Snell's law and total internal reflection with this free online refraction simulator. Choose optical media, set the incident angle, and observe refraction, reflection intensity, and TIR with white light.
Concepts: Snell's law, refraction, total internal reflection
Published interactive lab
Wave Interference Simulator — 2D Interference Patterns
Simulate 2D wave interference online with up to 8 sources. View displacement, intensity, or phase maps in real time. Adjust frequency, wavelength, phase, and amplitude per source.
Concepts: wave interference, constructive and destructive interference, Young's double slit