Theory & Objectives
Determine the frequency f of a tuning fork using a sonometer wire.
f = 1/2l √(T / m) = 1/2l √(Mg / m) ⇒ l² = (g/4f²m) · M
Rider Stable
Apparatus Controls
Wire Properties & Record
Observation Table (Table 12.1)
| # | Mass M (kg) | Resonance Length l (cm) | l² (cm²) | Action |
|---|
Graph: l² against M
Results & Calculations
Mass per unit length (m) = 0.00125 kg/m
Gradient of l² vs M = 0.00 cm²/kg
Calculate at least 2 resonant data points to find the frequency f.