🔴 Simple Pendulum

🖱️ Drag bob to deflect • Release to oscillate

📋 Observation Table & Error Analysis

📝 How to Perform the Experiment

1. Set the pendulum length (L) using the slider (e.g. start with 1.00 m).
2. Desktop/Tablet: Drag the red bob to one side and release to start oscillation.
   Mobile: Use the angle slider to set initial deflection — bob will oscillate automatically.
3. Observe the pendulum oscillating. Press ▶ Start on the stopwatch exactly when the bob is at one extreme.
4. Count oscillations aloud. One complete oscillation = bob goes to one side, comes back, and returns to the starting extreme.
5. After N = 20 oscillations, press ⏸ Stop.
6. Enter N in the stopwatch input field and press 🧮 g to calculate experimental value of g.
7. Press 📋 Record to Table to save the reading in the observation table.
8. Press 🔄 Reset, change the pendulum length, and repeat steps 2–7 for at least 3–5 different lengths.
9. After all readings, select the Least Count of your scale and stopwatch from the dropdowns in the table.
10. The table will automatically compute mean g, Δg, and display the final result as g = (value ± error) m/s².

💡 Tip: Use N = 20 oscillations for better accuracy. Small deflections (<15°) give results closest to T = 2π√(L/g).

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