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Simple Pendulum — Find g 🎮⏱️
Use time for N oscillations: g = (4π² L) / T²
SS2 • Mechanics ✅
m
Tap
Start
, wait N swings, then
Stop
. Or use Auto-measure 🤖.
Length L (m) 🎣
0.20–1.50 m recommended.
Oscillations N 🔁
Time several swings to average out error.
▶️ Start Timer
⏹️ Stop & Record
🤖 Auto-measure (simulate)
📐 Compute g from readings
♻️ Reset
Hidden true g (m/s²):
— hidden —
(Revealed after compute)
Your estimate g (m/s²):
—
Get 3+ readings for accuracy ⭐
Graph-fit g (from T² vs L):
—
Slope s = T²/L ⇒ g = 4π² / s
Readings (time for N oscillations) 📋
#
L (m)
N
Time (s)
Period T (s)
We add small timing noise (human reaction ±0.05s).
Graph: T² (s²) vs Length L (m) 📈
For a simple pendulum: T = 2π√(L/g) ⇒ T² = (4π²/g)L
Quick Theory 🧠
For small amplitudes,
T = 2π√(L/g)
. Measure time for N oscillations,
T = t/N
, then
g = (4π² L)/T²
.