Honest Equations
The period follows T = 2π√(L/g). No approximations hidden, no black boxes.
PHYSICS · LECTURE 3 · INTERACTIVE LAB
On Pendulums
Explore the mathematics of motion. Set the length, release, and predict the period. play_arrow
Drag & Release
Interactive rod adjustment. Click the pivot, drag to set amplitude, release to swing.
Score Your Predictions
Input your period guess. The app checks against the physics engine and updates your score.
- drag_handleGrab a pendulum
- play_arrowSet it swinging
- stopwatchPredict the period & check the stopwatch
“The interactive board made the physics click instantly. Finally a lab I can run from my laptop.”
Alex Chen, Undergraduate Physics Student
“Used it for my TA prep sessions. The equation display is gorgeous and totally correct.”
Ravi Patel, Teaching Assistant
“Self-learner friendly. The visual feedback on period change is exactly what I needed.”
Mia Torres, Independent Learner
Audit
Free access to lectures and static content.
Lab Pass
Full interactive lab, length controls, and period tracking.
Most PopularLecture Hall
Site-wide access for classrooms and institutions.
High-school algebra and trigonometry are all you need. We introduce calculus concepts gently within the lab.
Yes. The interface responds from 320px to 1440px wide. Touch-friendly targets meet 44px minimum.
Built on the small-angle approximation (θ < 15°). For larger amplitudes, the period increases slightly — we show the correction graph.
Yes. Lecture Hall tier includes projection-ready views and printable worksheets with physics constants.
Refunds available within 30 days of purchase for any tier. No‑questions‑asked for Audit cancellations.